Tunnel emergency telephone - SPQ-M-MT2

Tunnel emergency telephone specifically design for various types of tunnel wet environment, good waterproof effect, one-touch dialing, simple operation. It is mainly used for highway tunnel, subway, tunnel, mine passage, such as unattended area when emergencies arise to the outside for help.
Characteristics:
1, can be stored in a group of speed dial numbers, terminal user through keyboard can store / delete / modify 2, a group of switch signal output 3, the calling party, the machine automatically hang up, do not be busy 4, extended 1 built-in speakers, realizing the broadcast function 5, incoming calls can be automatically answer, it can monitor the live sound 6, the eye-catching colors conveniently found
Detail:
Features:1, Shell: 1.5mm thick steel plate, damage resistance2, Microphone, keyboard, buzzer, circuit board, shell all parts using multi-layer waterproof, dustproof structure.3, The telephone has good stability, strong anti-interference ability, in line with national standards GB / T 15279-944, The shell has a grounding device and internal circuit electrically isolated, with electromagnetic shielding function5, Shell spraying outdoor reflective paint, in an emergency situation easy to find, ten years do not fade6, Clear voice, loud voice, no feedback squeaking7, The ultrathin lightweight appearance, wall design