Details：
304 stainless steel shell, this phone has the features of one-key automatic alarm, one-key cyclic dialing, one-key automatic intercom and so on. It is an essential communication device for emergency help in elevators, and it is also a convenient communication device for clean room intercom.

Details：
The shell of the phone is made of high-strength stainless steel SUS304, and the surface is brushed (painted), 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 IP54

Details：
The telephone casing is made of high-strength stainless steel SUS304 material, and the surface is brushed (painted), which is resistant to abrasion and corrosion. The outer casing has a grounding device and is completely electrically isolated from the internal circuit.

Details：
Stainless steel 304 material, brushed on the surface, strong abrasion and corrosion resistance. The outer casing has a grounding device and is completely electrically isolated from the internal circuit and has a certain electromagnetic shielding effect.

Details：
It adopts high-grade zinc alloy material, can screen customer LOGO and related operation instructions, has dustproof, anti-noise and anti-violence characteristics, and the whole machine protection grade reaches IP54.

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;