Details：
The shell of the phone is made of high-strength aluminum alloy material, which is stamped out from the die and sprayed on the surface, which is resistant to wear and corrosion. The shell has a grounding device and is completely electrically isolated from the internal circuit, has a certain electromagnetic shielding effect, has dustproof, anti-noise, anti-riot characteristics, and the protection level of the whole machine reaches IP 54;

Details：
It is specially designed for emergency help phones in van elevators, clean rooms of pharmaceutical factories, dust-free workshops and other places. This phone has features such as one-key automatic alarm, one-key cyclic dialing, and one-key automatic intercom.