APPLIED WIRELESS SF900C4-B-B Switch Follower Voltage Input Wireless Control User Guide

June 1, 2024
APPLIED WIRELESS

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APPLIED WIRELESS SF900C4-B-B Switch Follower Voltage Input Wireless

Control

APPLIED-WIRELESS SF900C4-B-B-Switch-Follower-Voltage-Input-Wireless-Control-
product-image

Product Information

Specifications

  • Frequency: 900 MHz Spread Spectrum
  • Models:
    • Transmitter Models: SF900C4-B-B, SF900C8-B-B
    • Receiver Models: SF900C4-B-R, SF900C8-B-R
    • Outdoor Transmitter Models: SF900C4-B-B-OPT14, SF900C8-B-B-OPT14
    • Outdoor Receiver Models: SF900C4-B-R-OPT14, SF900C8-B-R-OPT14
  • Inputs: Opto-isolated, can be operated by 5 to 24 Volts AC or DC
  • Range: Up to 3 miles*
  • Features:
    • Voltage/Dry Contact Inputs
    • 4-Input or 8-Input Models
    • 10A Relay Outputs
    • Long Range: Up to 3 miles
    • 2-Way Operation
    • Spread Spectrum Technology
    • 12-24 Volt DC or AC Operation
    • NEMA 4X Enclosure Option
    • FCC Certified
    • Made in USA

Product Usage Instructions

Installation

  1. Ensure the transmitter and receiver are placed within the specified range of up to 3 miles*
  2. Connect the transmitter to a power source of 5 to 24 Volts AC or DC
  3. Connect the receiver to a power source of 12 to 24 Volts AC or DC
  4. Follow the user manual for specific wiring instructions based on the application

Operation
Once installed, the system can be operated by applying voltage through a switch contact, relay, sensor, or PLC output. The system utilizes frequency hopping spread spectrum technology, ensuring immunity to interference and multipath fading.

Indicators
The receiver features LED indicators for power, learn mode, relay activation, and RF signal reception. Use these indicators for troubleshooting and monitoring system status.

FAQ

  • Q: What is the expected range of the product?
    A: The expected range is up to 3 miles in unobstructed, straight line-of-sight conditions when used with the standard antennas included.

  • Q: Can multiple receivers be used with a single transmitter?
    A: Yes, multiple receivers can be used with a single transmitter, allowing for versatile control applications.

User’s Guide
Instructions for Installation and Operation

  • 90 0 MHz Spread Spectrum
  • Switch Follower/Voltage Input Transmitter
  • Models:
    • SF900C4-B-B
    • SF900C8-B-B
    • 900 MHz Spread Spectrum
    • Switch Follower/Voltage Input Receiver
  • Models:
    • SF900C4-B-R
    • SF900C8-B-R

APPLIED-WIRELESS SF900C4-B-B-Switch-Follower-Voltage-Input-Wireless-Control-
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  • 900 MHz Spread Spectrum
    Switch Follower/Voltage Input Transmitter- Outdoor Models:

    • SF900C4-B-B-OPT14
    • SF900C8-B-B-OPT14
  • 900 MHz Spread Spectrum

  • Switch Follower/Voltage Input Receiver- Outdoor

  • Models :

    • SF900C4-B-R-OPT14
    • SF900C8-B-R-OPT14

APPLIED-WIRELESS SF900C4-B-B-Switch-Follower-Voltage-Input-Wireless-Control-
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Models: SF900C Series
FCC ID : QY4-618
“This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

  1. This device may not cause harmful interference, and
  2. This device must accept any interference received, including interference that may cause undesired operation.”

INSTRUCTION TO THE USER

Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.

  • If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
    • Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
    • Consult an experienced radio/TV technician for help.

Changes or modifications not expressly approved by Applied Wireless could void the user’s authority to operate the equipment.

Applied Wireless Inc.

Switch Follower/Voltage Input Wireless Control
Model SF900C4 or SF900C8

Product Descriptions

  • The SF900C Series switch followers are a two-way system designed to provide a quick and cost effective solution for a variety of wireless switching applications. Each unit has 4 or 8 inputs connected to a transmitter and 4 or 8 10 Amp SPDT relay outputs connected to a receiver. They are transceivers designed to work in pairs, the output relays at the far unit will “follow” the inputs at the near unit and vice versa.
  • For the SF900C Pair, an optional loopback mode can be wired for each channel separately. At the RECEIVE end the relay output can be wired to activate the units corresponding input. This will close the corresponding relay at the originating TRANSMIT end confirming the switch change was carried out at the RECEIVE end.
  • The inputs are opto-isolated and may be operated by an applied voltage that can be supplied by a power source from 5 to 24 Volts AC or DC through a switch contact, relay, sensor, PLC output, etc.
  • These products utilize frequency hopping spread spectrum technology and are immune to interference and multipath fading. All inputs and outputs are independently isolated from each other and from the power supply and ground.
  • Expected range with these products is 3 miles*. The receiver requires 12 to 24 Volts AC or DC (supply not included).
  • Unobstructed, straight line-of-sight range, when used with the standard antennas included with the SF900C pair.

Features

  • Voltage/Dry Contact Inputs
  • 4-Input or 8-Input Models
  • 10A Relay Outputs
  • Long Range: Up to 3-miles
  • 2-Way Operation
  • Multiple Receivers Can Be Used With Single Transmitter
  • Loopback Mode sends Acknowledgement back to Transmit Side
  • Spread Spectrum Technology
  • 12-24 Volt DC or AC Operation
  • 120/240 VAC Power Input Option
  • NEMA 4X Enclosure Option
  • Antenna Included
  • FCC Certified
  • Made in USA

Typical Applications

  • Pump Control
  • Motor Control
  • Solenoid Control
  • Lighting Control
  • Access Control
  • PLC Activation
  • HVAC Control
  • Conveyer Control

LED Indicators (Receiver)

  • Power LED: Indicates that voltage is applied to the receiver.
  • Learn LED : LED blinks when in the learn mode.
  • Relay LED ’s : They indicate for each relay whether the relay is activated.

Data LED : LED indicates reception of RF signal at the receivers frequency of operation. For troubleshooting purposes, it can indicate the following:

  1. Whether the transmitter is actually transmitting.
  2. Whether there are interfering signals at the receiver’s frequency of operation. The LED should be dim if the transmitter has no input activated or button is not being pressed. Any LED indication would indicate that an interfering signal is present, the severity of which is indicated by how much the LED is activated.

Installation Instructions

  • Before Beginning the Installation
  • Plan your installation carefully. The physical location and orientation of the unit will have an influence on reception, particularly at longest ranges. For best results, the antennas should be positioned vertically (pointing either up or down). If necessary, use double-sided foam tape or hook & loop fasteners (not supplied) to secure the unit to a non-metallic vertical surface. Also, keep in mind that the RF signal from these spread spectrum products will travel through most non-metallic building materials (wood, stucco, brick, etc.), however maximum stated reception range is based on unobstructed line of sight conditions. Antenna extension cables are available when necessary to optimize antenna placement for range considerations.
  • POWER HOOKUP
  • The SF900C receiver has an internal DC/DC converter, so it may be connected to either 12-24 VDC or 12-24 VAC. The rightmost upper and lower terminals are for power. When using DC, the polarity is not important.
  • The SF900C-OPT14 outdoor models are also available with optional 124/240VAC internal power supply.
  • MULTIPLE RECEIVERS TO ONE TRANSMITTER HOOKUP
  • If multiple receivers are used in a system, ACKNOWLEDGMENT must be disabled in all but one receiver. If this is not done, the transmitter will have multiple transmissions coming back at it at the same time, essentially jimmy it. This is an internal jumper setting that the installer can do, or the factory can do.
  • Multiple transmitters to one or more receivers will not work.

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LEARN PROCEDURE

  • STANDARD TWO WAY APPLICATION : To pair two SF900C units, place both units in the learn mode by pushing their respective learn buttons. The learn lights will flash. Let’s call one the Base unit and the other the Remote unit. The second push of the learn button on the Remote unit will trigger the learning process. Once completed, the learn lights will turn Off. The Remote unit will have  learned and adopted the code and frequency of the Base unit. The Base unit is defined as the unit that has not adopted an alternate code. The distinction is important for the next example.
  • More SF900C receivers can be added to the above system one at a time by using the same SF900C as the Base unit. However, the covers will have to be removed from the additional SF900C receivers and the ACK jumper will have to be moved to the NO ACK position to disable acknowledgements. When a signal is received from a transmitter, only one receiver, logically the Base unit, must reply with an acknowledgment to avoid collisions. APPLIED-WIRELESS SF900C4-B-B-Switch-Follower-Voltage-Input-Wireless-Control- \(4\)

CHANGING THE FREQUENCY

  • It is rarely necessary to change the frequency, however the following outlines the procedure should it be necessary:

  • The least significant 5 bits of the address of the Base unit is used to determine the frequency of operation, one of 32 possible. Therefore, there is a 1 in 32 chance that any two units will be operating on the same frequency. The label on the units will have the 4-digit hex code as well as a 2-digit hex frequency. If two or more Base units are to be operating in the same area and they have the frequency, the Base units can be set to different frequencies.

  • Use the 4-position dip switch covering switch positions 2 – 5 and an enable jumper in place of switch 6 allowing for 16 possible frequencies. To enable the alternate frequency selection, Jumper J4 must be moved to the two pins closest to the “EN” position
    and each of the dip switches must be moved up or down. To disable the alternate frequency selection, the enable jumper must be moved to the two pins farthest from the EN location and the dip switches must be moved to the center tri-state position. See the Frequency Select Switch Table. (1 is UP and 0 is DOWN.)

  • NOTE: Whenever the frequency select switch, S1, is changed on the Base unit, the power has to be turned Off and back On again for the frequency change to take effect. Then, the Learn Procedure will have to be repeated for all of the Remote units associated with the Base unit that has a new frequency setting.

FREQUENCY TABLE

CHANNEL CHANNEL 6 Position Switch 4 Position Switch
Decimal HEX BINARY, lsb first BINARY, lsb first
0 00 000000 0000
1 01 100000  
2 02 010000 1000
3 03 110000  
4 04 001000 0100
5 05 101000  
6 06 011000 1100
7 07 111000  
8 08 000100 0010
9 09 100100  
10 0A 010100 1010
11 0B 110100  
12 0C 001100 0110
13 0D 101100  
14 0E 011100 1110
15 0F 111100  
16 10 000010 0001
17 11 100010  
18 12 010010 1001
19 13 110010  
20 14 001010 0101
21 15 101010  
22 16 011010 1101
23 17 111010  
24 18 000110 0011
25 19 100110  
26 1A 010110 1011
27 1B 110110  
28 1C 001110 0111
29 1D 101110  
30 1E 011110 1111
31 1F 111110  

ELECTRICAL CHARACHTERISTICS

Sym Parameter Min Typ Max Unit
  Operating Voltage Range 10 12 36 Volts
  Operating Current, Receive Mode   45 56 mA
  Operating Current, Transmit Mode   212 225 mA
  Input Resistance   4.7K   Ohms
  Signal Input Voltage 5   28 Volts AC or DC
  Output Relay Contact Ratings at 28VDC     10 Amps
f Frequency Range 902   928 MHz
Pout Output Power   15   mW
Zout Antenna Input Impedance   50   Ohms
Top Operating Temperature -20   +60 C

ORDERING INFORMATION
Transmitters (Base Units)

Model No.| Product Description| Channels/ Buttons| Range| Response Time
---|---|---|---|---
SF900C4-B-B| Switch Follower Transmitter| 4| 3-miles| 180 ms
SF900C4-J-B| Switch Follower Transmitter| 4| ½-Mile| 58 ms
SF900C8-B-B| Switch Follower Transmitter| 8| 3-miles| 180 ms
SF900C8-J-B| Switch Follower Transmitter| 8| ½-Mile| 58 ms
 |  |  |  |
Outdoor Units|  |  |  |
SF900C4-B-B-OPT14| Switch Follower/Voltage Input Transmitter, NEMA 4X Enclosure| 4| 3-miles| 180 ms
SF900C4-J-B-OPT14| Switch Follower/Voltage Input Transmitter, NEMA 4X Enclosure| 4| ½-Mile| 58 ms
SF900C8-B-B-OPT14| Switch Follower/Voltage Input Transmitter, NEMA 4X Enclosure| 8| 3-miles| 180 ms
SF900C8-J-B-OPT14| Switch Follower/Voltage Input Transmitter, NEMA 4X Enclosure| 8| ½-Mile| 58 ms
 |  |  |  |
Suffix -PS to any OPT14 Model| 120/240VAC Input|  |  |

Receivers

Model No.| Product Description| Channels/ Buttons| Range| Response Time
---|---|---|---|---
SF900C4-B-R| Switch Follower Receiver| 4| 3-miles| 180 ms
SF900C4-J-R| Switch Follower Receiver| 4| ½-Mile| 58 ms
SF900C8-B-R| Switch Follower Receiver| 8| 3-miles| 180 ms
SF900C8-J-R| Switch Follower Receiver| 8| ½-Mile| 58 ms
 |  |  |  |
Outdoor Units|  |  |  |
SF900C4-B-B-OPT14| Switch Follower Receiver, NEMA 4X Enclosure| 4| 3-miles| 180 ms
SF900C4-J-B-OPT14| Switch Follower Receiver, NEMA 4X Enclosure| 4| ½-Mile| 58 ms
SF900C8-B-B-OPT14| Switch Follower Receiver, NEMA 4X Enclosure| 8| 3-miles| 180 ms
SF900C8-J-B-OPT14| Switch Follower Receiver, NEMA 4X Enclosure| 8| ½-Mile| 58 ms
 |  |  |  |
Suffix -PS to any OPT14 Model| 120/240VAC Input|  |  |

Related Optional Products

Model Description Volts Current
610442-SAT AC Power Adapter, 120VAC Input 12 VDC 500 mA
610347 AC Power Adapter, 120VAC Input 24 VDC 800 mA
610300 AC Power Transformer, 120VAC Input 24 VAC 20 VA
269006 AC Power Line Contactor, SPST, 30A, 24VAC coil 240VAC 30A

Optional Antenna Bulkhead Extension Cables

Model Description Length
600279-8 RPSMA Male to Female 8 Inches
600279-L100E-24 LMR-100 or Equiv. 24 Inches
600279-10F-L200 LMR-200 or Equiv. 10-Ft
600279-15F-L200 LMR-200 or Equiv. 15-Ft
--- --- ---
600279-20F-L200 LMR-200 or Equiv. 20-Ft
600279-25F-L200 LMR-200 or Equiv. 25-Ft

Other lengths available

BLOCK DIAGRAM

APPLIED-WIRELESS SF900C4-B-B-Switch-Follower-Voltage-Input-Wireless-Control-
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RECEIVER PACKAGE DIMENSIONS

APPLIED-WIRELESS SF900C4-B-B-Switch-Follower-Voltage-Input-Wireless-Control-
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  • NC-Normally Closed Contact
  • C1- Common Contact
  • NO- Normally Open Contact-
  • Note: Terminal Strips may be “unplugged” for ease of installation

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APPLICATION DIAGRAMS
Remote Activation of Relay(s)
In this example, switch(s) activation on a water tank or other switch application, will remotely activate a relay(s) for activating, pump, motor, light or other device. APPLIED-WIRELESS SF900C4-B-B-Switch-Follower-Voltage-
Input-Wireless-Control- \(8\)

APPLICATION DIAGRAM

  • Acknowledgement / Loopback
  • In loopback mode, the target relay(s) is/are activated as in the earlier example. However, in Loopback mode, a transmission will then be sent back to the originating location and a relay(s) activated as feedback that the remote operation has been carried out. APPLIED-WIRELESS SF900C4-B-B-Switch-Follower-Voltage-Input-Wireless-Control- \(9\)

APPLICATION DIAGRAM- Thermostat to HVAC

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TROUBLESHOOTING GUIDE

Symptom Possible Problem Notes
Poor Range Antenna or Antenna Placement For omnidirectional operation, the

antenna should be vertical and placed in a location clear of obstructions and as high as possible.
 | RF Interference| Observe the DATA LED and try a different frequency if necessary.
Doesn’t Work| Battery| Always check the battery. With a weak battery it is possible for the SFT900C transmit LED to work without transmissions occurring.
 | Data Reception| Check that the DATA LED on the receiver is on bright when the transmitter is transmitting.
 | ID Code Match| Transients can sometimes cause a unit to unlearn a code. Redo the Learning process.

ONE YEAR LIMITED WARRANTY (USA)

Products manufactured by APPLIED WIRELESS, INC. (AW) and sold to purchasers in the USA are warranted by AW according to the following terms and conditions. You should read this Warranty thoroughly.

WHAT IS COVERED, AND DURATION OF COVERAGE:
AW warrants the product to be free from defects in materials and workmanship for one (1) year from the date of purchase by the original end user purchaser.

WHAT IS NOT COVERED:
This warranty does not apply to the following:

  • Damage caused by accident, physical or electrical misuse or abuse, improper installation, failure to follow instructions contained in the User’s Guide, any use contrary to the product’s intended function, unauthorized service or alteration (i.e. service or alteration by anyone other than AW).
  • Damage occurring during shipment.
  • Damage caused by acts of God, including without limitation: earthquake, fire, flood, storms, or other acts of nature.
  • Damage or malfunction caused by the intrusion of moisture or other contamination within the product.
  • Batteries supplied by AW in or for the product.
  • Cosmetic deterioration of chassis, cases, or pushbuttons resulting from wear and tear typical of normal use.
  • Any cost or expense related to trouble-shooting to determine whether a malfunction is due to a defect in the product itself, in the installation, or any combination thereof.
  • Any cost or expense related to repairing or correcting the installation of an AW product.
  • Any cost or expense related to the removal or reinstallation of the product.
  • Any product whose serial number or date code is altered, defaced, obliterated, destroyed, or removed.

This warranty is extended to the original purchaser of the product(s) only, and is not transferable to any subsequent owner or owners of the product(s). AW reserves the right to make changes or improvements in its products without incurring any obligation to similarly alter products previously purchased.
EXCLUSION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES:
AW expressly disclaims liability for incidental and consequential damages caused (or allegedly caused) by the product. The term “incidental or consequential damages” refers (but is not limited) to:

  1. Expenses of transporting the product to AW to obtain service.
  2. Loss of use of the product.
  3. Loss of the original purchaser’s time.

LIMITATION OF IMPLIED WARRANTIES

  • This warranty limits AW’s liability to the repair or replacement of the product. AW makes no express warranty of merchantability or fitness for use. Any implied warranties, including fitness for use and merchantability, are limited in duration to the period of the one (1) year express limited warranty set forth herein. The remedies provided under this warranty are exclusive and in lieu of all others. AW neither assumes nor authorizes any person or organization to make any warranties or assume any liability in connection with the sale, installation, or use of this product.
  • Some states do not allow limitations on how long an implied warranty lasts, and some states do not allow the exclusion or limitation of liability for incidental or consequential damages so the limitations or exclusions stated herein may not apply to you. This warranty give you specific legal rights and you may have other rights which vary from state to state.

HOW TO OBTAIN WARRANTY SERVICE:

If a product covered by this warranty and sold in the USA by AW proves to be defective during the warranty period AW will, at its sole option, repair it or replace it with a comparable new or reconditioned product without charge for parts and labor, when said product is
returned in compliance with the following requirements:

  1. You must first contact AW at the following address/phone for assistance

    • APPLIED WIRELESS, INC.
    • 1250 Avenida Acaso, Suite F
    • Camarillo, CA 93012
    • Phone: 805-383-9600
      If you are instructed to return your product directly to the factory, a Return Merchandise to you.
  2. You must package the product carefully and ship it insured and prepaid. The RMA number must be clearly indicated on the outside of the shipping container. Any product returned without an RMA number will be refused delivery.

  3. In order for AW to perform service under warranty, you must include the following:

  4. Your name, return shipping address (not a PO Box), and daytime telephone number.

  5. Proof of purchase showing the date of purchase.

  6. A detailed description of the defect or problem.

Upon completion of service, AW will ship the product to the specified return shipping address. The method of shipping shall be at AW’s sole discretion. The cost of return shipping (within USA) shall be borne by AW.

© Copyright 2017 by Applied Wireless, Inc. All rights reserved.

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