12V/2A Solenoid ElectroMagnetic Lock LP Security QUAD 2 This is DHT11 sensor for

This is DHT11 sensor for measuring temperature and realtive humidity

This chip is like a rotary switch - it internally routes the common pin (COM in the schematic

long life span

Storage capacity: 300 pieces

On-board charging via standard uUSB

12V/2A Solenoid ElectroMagnetic Lock LP Security QUAD 2 This is DHT11 sensor forFeatures: Used for locking sell machine, storage shelf, file cabinet and etc. The hidden way of unlocking can be used for emergency. The lock works as the circuits disconnects, and it will unlock as the instant power on. Boasting the detection signal, K01 can detect the open or close of the door. It is steady, durable and energy saving and had a long lifespan. In the anti theft and shockproof design, the lock is better than other kinds of locks.