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Model CV-634W 

Piezo Keypad W/ Wiegand Output 

Installation Instruction

Protocol:

 Wiegand 26 

Power Supply:

 12 to 28 VDC 

Power Standby Consumption:

 less than 30 mA 

(40mA when illuminated) 

Mounting:

 Single Gang Switch Box, or directly to the wall. 

Environment:

 IP68; 100% relative humidity 

Temperature:

 - 40° to + 70°C 

CLICK-N-LOCK mounting screw protection.

When the LED control input is pulled low, the GREEN LED 

will be ON and the RED LED will be OFF. When the input 

goes high the RED LED is ON and the GREEN LED is OFF. 

The RED LED will flash with each key press. The LED control 

input is pulled to the in5v with a 2.2K resistor.
The data is sent at 1 msec per bit with a pulse duration of 50 

usec. A Buzzer beeps with each key press.

26 BIT WIEGAND SPECIFICATIONS:

WIRING COLOR

FUNCTION

ELECTRICAL FUNCTION

RED

Input Voltage (+)

8-25 VDC

BLACK

Input Voltage (-)

GREEN

Data 0

Open drain, 2.2K pull-up to in5V

WHITE

Data 1

Open drain, 2.2K pull-up to in5V

BROWN

LED Input

‘LOW’: LED=green, ‘OPEN’: LED=red

BLUE

CCTV output

Open drain, max 0.25 A activated with  

each key for 30 Sec.

VIOLET

Housing Ground

ORANGE

Buffered Input

‘LOW’: Hold

GREY

Tamper Output

Open drain, max 0.25A, ‘LOW’ when light sensed

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