Continental RHT433 Remote Control User Manual

Continental RHT433 Remote Control

System Overview

The RHT433 is a transmitter designed to provide remote keyless entry, passive entry, passive engine start, and immobilization functionality to the FCA platform, it is part of a larger system provided to FCA by Continental which allows the customer to:

• Remotely start the engine.
• Remotely lock the doors.
• Remotely unlock the doors.
• Remotely open the trunk.
• Remotely find the car.
• Remotely unlock and lock doors in passive mode (PASE).
• Start engine in passive mode (PASE).
• Start the car via push button (IMMO immobilization).
• Use mechanical emergency key as back-up to access to the vehicle.

The system consists of PASE FOBIK, RFHM, and IMMO. The Remote Keyless Entry (RKE) and Start uses a Radio Frequency (RF) link for communication between the end user and the vehicle; For Passive Entry and Passive Start function, FOBIK receives LF command from RFHM via a Low Frequency (LF) link and responses back via RF link. The Immobilization uses a Low Frequency (LF) link for communication/authentication between FOBIK and IMMO.

TECHNICAL DESCRIPTION

• Measurements (L W H): ca. 77 x 41 x 20 mm
• Weight: ca. 76 g
• Operating temp range: -20°C / + 70°C (limited by the battery)
• Carrier frequency: 433,92 MHz/ 315 MHz
• Bandwidth: 32kHz for RKE (ASK) and 57kHz for PASE (FSK).
• Number of channels: 1
• Type of modulation: ASK for RKE telegrams and FSK for PASE telegrams
• FSK deviation range: +/- 10 kHz +/- 20 kHz
• Baud rate: 2.4 kbps for RKE and 9.6 kbps for PASE
• Rated Output Power: -13 dBm (433MHz variant); (-17.5 dBm 315MHz Japan only)
• Averaging factor: 433MHz -11.27dB , and 315MHz -11.27dB
• Antenna: PCB loop antenna
• Antenna Gain: H pol=-17.22 dBi, V pol=-36.77dBi
• Voltage supply range: 2 up to 3.3V
• Power supply: 3V dc battery cell
• Manufacturer : Continental Automotive GmbH
• Siemensstr. 12, 93055 Regensburg, Germany

BLOCK DIAGRAM

The block diagram below shows the main electronic units of the RHT433/(Japan: RHT315) Fobik:

Warnings
For safe use, read the instructions carefully! Battery:

CAUTION!
Risk of explosion, if the battery is replaced by an incorrect type.
Only use battery type CR2450 (3 V)
Batteries must be inserted into the Keyfob with correct polarity (+ and -).
Avoid extreme temperatures or extreme environmental conditions. Risk of explosion Never dispose batteries to fire. Never try to open batteries. Risk of explosion
The battery is not ordinary waste, discard old batteries to your local recycling. Never leave children unattended with the keyfob →choking hazard.
Serial product will contain the following additional information on label:
Continental request to the customer (OEM) to place following statements into the vehicle owners manual:
Do not ingest battery, Chemical Burn Hazard.
This product contains a coin / button cell battery. If the coin / button cell battery is swallowed,
it can cause severe internal burns in just 2 hours and can lead to death.
Keep new and used batteries away from children.
If the battery compartment does not close securely, stop using the product and keep it away from children. If you think batteries might have been swallowed or placed inside any part of the body, seek immediate medical attention.

Regulatory information

FCC/ISED Owner Manual statement of compliance
NOTE: If the device itself is smaller than 8 cm x 10 cm, the statements of compliance may be included in the device or vehicle owner/operator manual. However, if the device itself is larger than 8 cm x 10 cm, then it is required to have at least the first paragraphbelow placed on the device label or housing.
This device complies with Part 15 of the FCC Rules and with Industry Canada’s licence-exempt RSSs.
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.

Note: Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

Typical Usage Pattern

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