INSTALLATION INSTRUCTIONS

INSTALLATION INSTRUCTIONS MODEL 474U - TOUCHLESS SENSE SWITCH

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.

• 1. It is not necessary to remove the back cover. All connections should be terminated to the provided 5-pin wire harness.
• 2. Feed the low voltage wiring through the wall to the back box.
• 3. 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).
• 4. 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.
• 5. Apply 12 or 24 VDC power to the device. The LED indicator ring will turn RED.
• 6. 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.
• 7. If necessary, adjust the read range of the sensor by carefully turning the blue potentiometer visible through the rear cutout of the 474U.

Dimensions

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.

Input Voltage		12 or 24VDC
Current @ 12VDC 24VDC		40mA Standby	60mA Active
Contact Rating		(1) Form C Relay, 3A@30VDC (Resistive)
LED Color	Standby	Red
	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)

Specifications

Wiring Details

+12~24VDC Red Power GND Black Yellow COM Relay White NC: Output Green

4.5" X 2.75" x 1.375"

Read Range Adjustment

NOTE: Carefully use a small phillips head screwdriver to turn blue pot, 1/4 turn at a time

[t] 800.413.8783 ■ 805.494.0622 ■ [f] 805.494.8861 ■ 801 Avenida Acaso, Camarillo, CA 93012 ■ PO Box 3670, Camarillo, CA 93011

Typical Wiring Examples

Example 1: Connecting the 474U to an Automatic Door Operator

Figure 2.