SDC Touchless Sense Switch 474U Instruction Manual
- June 6, 2024
- SDC
Table of Contents
SDC Touchless Sense Switch 474U
Installation & Operation
NOTE: The SDC 474 must be mounted to a single-gang electrical back box or plaster ring. All national and local codes must be followed in the installation of the 474U.
- It is not necessary to remove the back cover. All connections should be terminated to the provided 5-pin wire harness.
- Feed the low voltage wiring through the wall to the back box.
- Connect the wires to the wiring harness using twist-on wire connectors, crimp connectors, or another acceptable connector (see page 2 for typical wiring examples).
- Mount the stainless steel faceplate onto the back box using the two supplied screws. Be careful not to pinch any wires when mounting the device.
- Apply 12 or 24 VDC power to the device. The LED indicator ring will turn RED.
- Test for proper activation by placing a hand within a few inches of the sensor. The LED sensor ring will change from RED to GREEN, and the relay will activate.
- If necessary, adjust the read range of the sensor by carefully turning the blue potentiometer visible through the rear cutout of the 474U.
Features & Applications
- Uses Active IR sensor technology; device is activated with the simple wave of a hand
- Designed to control electric locks/strikes, magnetic locks, or automatic door operators
- Ideal for use in cleanrooms, hospitals, labs, schools, or offices
- Adjustable sensing range from 2″ up to 7″
- Mounted on a durable stainless steel plate
- Dual LED, illuminated sensor indicates status
- 8-inch color coded wire harness for easy installation.
Specifications
| Input Voltage | 12 or 24VDC |
|---|---|
| Current @ 12VDC 24VDC | 40mA Standby 60mA Active |
| Contact Rating | (1) Form C Relay, 3A@30VDC (Resistive) |
| LED Color | Standby |
| Active | Green |
| Read Range | Adjustable (2″-7″) |
| Output Activation Time | 1 Second or as long as sensor is triggered |
| Operating Temp. | -4deg F ~ 131deg F (-20C ~ 55C) |
| Weight | 3 oz. (85g) |
| Dimensions | 4.5″ X 2.75″ x 1.375″ |
Dimensions
Typical Wiring Examples
Example 1: Connecting the 474U to an Automatic Door Operator
Example #2: Using the 474U as a Request to Exit device in an access control system.
*NOTE: Refer to manufacturer’s installation instructions for Power
Supply, Keypad, & Lock wiring. Locks must be the same voltage as the power
supply output.
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