1. General wiring drawing ／
Characteristics  ／
1.Joint functioning way: NO type and NC type. 2.There are two LEDs which can turn 360o and    watch the situation of the detector. 3.The use of common base is advantageous to    the exchange of detector.
Functioning way／
As there is smoke getting in the detector, the ion current will be decreased, making the voltage increase and touching the detector to function and send out alarm. Meanwhile, the LED will be turned on automatically. Under normal situation, the LED has monitoring function. And as it functions, the LED keeps turning on continuously. It is suitable for installation at the places like the entrance of staircase, corridor, lift hall, indoor room, etc.
Specifications ／
Model No
HC-202A Ionization Smoke Detector
Overall structure
Adopted voltage
DC-12V
Mainframe
Fire-resisting ABS resin material
Monitoring electric current
25μA
Joint terminal
Copper rod (zinc-plated)
Functioning electric current
30mA
Base
Fire-resisting ABS resin material. Copper rod (zinc-plated)
Suitable temperature
-15~60° C
Suitable humidity
0~95% RH
Color
Ivory
Size
134mm x 31mm
Notes
Prohibit from being installed at the places with large volume of smoke and steam lingering, and the inlet and outlet of cold and warm air.
Weight
125g
Provide the outside with the maximum value of signal input joint volume
DC-30V 1A
General wiring drawing ／
※The red wire is the power source (DC-12V) ※The black wire is the signal source. ※For point 3 and point 4, the NO type appears to be open all the time, and the NC type appears to be close all the time.