SDC 474U TOUCHLESS SENSE SWITCH User Manual
Installation & operation dimensions, Specifications
INSTALLATION INSTRUCTIONS
MODEL 474U – TOUCHLESS SENSE SWITCH
Features & Applications
Uses 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
Sensing range up to 4" (10cm)
Mounted on a durable stainless steel plate
Dual LED, illuminated sensor indicates status
Quick connect screwless terminal block for easy
installation.
NOTE: The SDC 474 must be mounted to a single-gang electrical back box or plaster ring.
1. Unscrew the four rear cover screws. Remove the rear cover to expose the 8-position
screwless terminal block
.
2. Feed the wiring through the wall to the back box. Feed the wiring through the gasketed
hole of the rear cover. Verify that the wire leads are on the inside of the rear cover.
3. Connect the wires onto the screwless terminal block (see page 2 for typical wiring
examples). Verify that each wire is securely terminated by gently pulling on each wire.
4. Replace the rear cover of the sensor switch, and secure the four cover screws.
5. 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.
6. Apply 12VDC power to the device. The LED indicator ring will turn RED.
7. Test for proper activation by placing a hand within 4" of the sensor. The LED sensor ring
will change from RED to GREEN, and both relays will activate.
Installation & Operation
Dimensions
No Touch
Screwless
Terminal Block
Connections
12/24VDC
PWR
Relay#1
P:\INSTALLATION INST\Push and Key Switch\INST-474U.vsd Rev-B 10-13 Page 1
Specifications
1-
⅛
"
(29mm)
2-¼"
(56mm)
4-
½
"
(115mm)
2-
¾
"
(70mm)
1-
¾
"
(45mm)
Side View
Front View
Rear View
Rear Cover
Rubber Gasket Ring
Relay#2
+
NO
NC C
NO
NC C
801 Avenida Acaso, Camarillo, Ca. 93012 • (805) 494-0622 •
www.sdcsecurity.com • E-mail: [email protected]
Any suggestions or comments to this instruction or
product are welcome. Please contact us through
our website or email [email protected]
text
No Touch
Input Voltage
Current @ 12VDC
24VDC
Contact Rating
LED Color
Range
Standby
Active
Output Activation
Time
Operating Temp.
Weight
Dimensions
30mA
15mA
Standby
70mA
35mA
Active
(2) Form C Relays, 3A@30VDC (Resistive)
Red
Green
4" (10cm) max.
1 Second or as long as sensor is triggered
-4deg F ~ 131deg F (-20C ~ 55C)
3 oz. (85g)
4.5" X 2.75" x 1.375" (mm = 115 x 70 x 35)