Applicable to: Suitable for campus schools, farms, prisons, troops, etc.

Phone features:
1. The outer casing of the telephone is made of cold-rolled steel plate, stamped by die, and the surface is treated with baking varnish. It has strong corrosion resistance, dustproof, anti-noise and anti-riot characteristics. The whole machine protection grade is IP54;
2. The telephone main board is developed by imported ATMEL MCU, environmentally friendly SMD components, high integration, safety and stability;
3. Telephone 16-bit button (keyboard) is made of high-grade zinc alloy metal material, contact resistance ≤ 30 ohms. Service life ≥ 2 million times. Pressing force 160-200 grams;
4. Telephone handset (handle) adopts imported ABS engineering plastics, Teflon wire, high-strength wear-resistant metal hose, and adopts special anti-noise microphone, which makes clear call and seal in 115dB (volume unit: decibel) environment. Good sex;
5. The telephone handset hook (hanging fork) is made of zinc alloy material and controlled by intelligent magnetic induction switch. The service life is ≥500,000 times;
6. Low power consumption, suitable for all kinds of telephone lines; lightning protection and leakage prevention design;
7. Wiring method: connect to ordinary telephone line. There is no need to supply power separately, and the telephone line is powered.