സ്ഫോടന തെളിവ് ഫൈബർ ഒപ്റ്റിക് ടെലിഫോൺ എക്സ്റ്റൻഷൻ മൈനിംഗ് ടെലിഫോൺ - JWBT831

1. Direct access to Ethernet, cross-network segment and cross-route.

2. Digital key dialing, call any terminal to realize full-duplex intercom (default).

3. Calling a call to the area permitted by the permission.

4. The patented design of the phone case is waterproof, dustproof, no need for waterproof cover, beautiful and practical.

5. The circuit inside the telephone adopts the international universal double-sided integrated circuit, which has precise number and call clear, stable work and other advantages.

6. Aluminum alloy die-cast housing, stainless steel keyboard, explosion-proof PC receiver, zinc alloy fork.

7. 30W*4 output high-quality amplifier amplification, with warning lights, clear sound and bright.

8. Automatic answering function, which can realize paging broadcast.

9. You can set the hotline number and lift the machine to realize automatic dialing.

10. Amplification and earpiece volume can be adjusted through the keyboard.

11. Aluminum alloy die-cast housing, stainless steel keyboard, explosion-proof PC receiver, zinc alloy fork.

12. The surface of the shell is electrostatically sprayed at high temperature, with good antistatic ability and corrosion resistance.

13. The key parts handles, hanging forks and keyboards are all produced by our company. The quality control is strictly controlled, and the reaction speed is fast after sale.