brand : ADAM SYEXReminder:Most of the modules of the store only provide descriptions or send information, there is no technical advice and support, please take a careful beginners. [ADAM SYEX] fog sensor (with relay output) / smoke sensor module / smoke detector working voltage DC9V Standby current 10UA Induced current Less than 30MA Output mode Relay normally open, normally closed, or output high or low level sensitivity Adjustable working temperature -5 - 50 Smoke sensor module wiring instructions Black: power supply Red: power cathodeDC9V White: relay often start Blue: relay common Green: relay normally closed end Simple test method: 1, Hold down the test button3SThat light starts flashing relay relay often start and end connected to the public. 2, Can also smoke a cigarette, the smoke into the maze,3SAbout the indicator light starts flashing, relay, relay and switch on the public side often start
M**R
OK as a sensor, but the relay does not stay latched once triggered.
I bough the same model sensor from another store.When it detects smoke, the LED will flash (prior to triggering), and then when it finally triggers, it will flash continuously for a bit and then slower which I think is just indicating some threshold is met on the sensor. When triggered, the relay will switch from NC to NO, but will only stay latched for about 1min before switching back if no more smoke is detected. When triggered there will was 8.63v on the "out" line on the header to the right of the relay.Adjusting the POT clockwise seems to increase sensitivity (I only went 1/2 turn since it may not have a stop).It should be obvious, but if power is disconnected, the relay it will revert to the normally closed (green wire) terminal connected to common (blue wire). Interestingly I triggered it, and accidentally pulled the ground wire, which flipped the relay back to NC, but when I reconnected it, the relay went back to NO (alarm) for less than a minute before reverting to NC.The main problem with this is that, once triggered, it will only latch for about 1 minute and then the relay flips back (when smoke is removed). If used as a sensor with an arduino or similar that is not a problem since the logic in the program can be used to trigger another external relay, however if the plan is to have a siren enabled. or to disable power to something (or both) then this may not be the best bet since it can only be relied upon to trigger for about 1 min (once triggered with no further smoke detected). If there were a fire and the sensor still functioned then I believe it would stay triggered (though I have not tested that).
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