AITRIP 10PCS 5V One Channel Relay Module Relay Switch with OPTO Isolation High Low Level Trigger Compatible with Arduino Raspberry pi ARM AVR 1CH-5V-10PCS industrial this product comes with 2

this product comes with 2 AAA battery replaceable battery Low Battery Tips: When the battery voltage is 2

cars and other places

Silicone Keypad Silicone button gives soft hand feel not stiff

customers outside of California may receive this product "Fulfilled by Amazon" with this unrequired California Proposition Warning

high strength and waterproof

AITRIP 10PCS 5V One Channel Relay Module Relay Switch with OPTO Isolation High Low Level Trigger Compatible with Arduino Raspberry pi ARM AVR 1CH-5V-10PCS industrial this product comes with 2AITRIP 10PCS 5V One Channel Relay Module Relay Switch with OPTO Isolation High Low Level Trigger Compatible with Arduino Raspberry pi ARM AVR Product introduction: 1. this module is in line with international safety standard, control areas and load area have the isolation groove; 2. USES the loose quality goods relay; 3. have power and relay operation instructions, and bright, disconnect the dawn; 4. signal input signal, the public end and will often