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4 recommended for stability) with Bluetooth 4
USB-powered
Modulate Frequency: 38Khz
Dot Size (w x h): 0
LED Matrix Displays
Light Control Switch Relay (12V, with Photoresistor XH-M131) TMP36GT9 4 recommended for stability) with12V Light Control Switch Relay module can be used for light detection and automatic triggers. The light control switch with photoresistor XH M131 can do a variety of brightness detection. It can automatically turn on at night, and automatically turn off during the day. Can be used when equipment needs to be automated. Physical Features: 4 M3 screw mounting holes Module output has three ports common (COM) normally open (CK), normally closed (CB) Board
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