F21-2S-Y Industry Wireless Remote Control Transmitter Switch 500M for Elevator

Description

Feature:
1.High sensitivity, good accuracy, effective distance, signal persistence for a long time.
2.The transmitter and receiver for one-to-one encoding, so that its anti-interference ability.
3.The appearance of the remote control material using glass fiber reinforced nylon material, has a strong acid corrosion, high and low temperature and water and dust resistance.
4.With emergency stop mushroom head, plus two direction function keys.
5.A strong voltage self-test function, when the transmitter voltage is less than 2.2V when the transmitter is slowly flashing red light tips, the voltage is less than 1.8V transmitter can not work.
6.Up / down can be set to normal, Na jump, whether to suppress each other.