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CV-550 SPK V3 REFERENCE MANUAL
INSTALLATION INSTRUCTIONS
2. INSTALLATION, WIRING AND DEBUGGING
2.1 Installation
Using the Torx screwdriver remove the security fastening screw at the bottom of the device. Take off the bottom case and use
it to mark the position on the wall for the mounting holes. Use a drill to open a corresponding hole in the wall. The backplate
marks an outlet hole with a diameter greater than ¼” (8mm) and four plastic wall plugs holes with a diameter of ¼” (6mm). Use a
Phillips screwdriver to secure the backplate to the four matching plastic wall plugs with the four matching self-taping screws.
2.2 Wiring
Refer to the selected wiring diagram, cut the wire to the right length and cut off the excess feeding the cable through the wall
or into the backbox. Connect the remaining keypad wires as shown on the wiring diagram. Be careful not to connect the wrong
wires or short circuit, otherwise permanent damage to the keypad may occur. After checking, power on for a short time, confirm
the indicator light is normal and the buzzer beeps once. Otherwise, power off immediately and recheck the wiring properly. If all
is well, secure the keypad onto the backplate on the wall and tighten it with the security screw as below:
The product wiring colors and functions are shown in the following table:
Color
Symbol
Functions
Light
green
AC2
One of the AC power supply terminal.
Blue
NO
Normal open terminal of Relay
Purple
COM
Common terminal of Relay
Orange
NC
Normal close terminal of Relay
Grey
ALARM(BELL)
Alarm (or doorbell) signal MOS drain output
Yellow
OPEN(BEEP)
Exit button input (or external control input of buzzer)
Brown
D_IN(LED_G)
Door contact input (or external control input of green LED)
