Stainless steel keypad handfree emergency dustproof telephone for emergency exit - JWAT404

1. The phone can form an independent telephone communication system with couplers.  

2. The phone can be connected directly to the telecommunications network.  

3. After the  composition of the call system, each phone is an independent station.  The malfunction of any phone doesn’t affect the whole system work.  

4. After the  composition of the call system, the product has an automatic gain  function, and the voice does not vary with distance or telephone  quantity.  

5.Telephone circuits  within the integrated circuit using internationally accepted  double-sided, with hair the exact number, call clarity, job stability,  etc.  

6. High strength cold  rolled steel housing, imported high-grade powder paint cover,  high-temperature baking, bright colors and wear corrosion resistance.  

7.Hands-free keypad  design, to avoid cross-contamination; phone built-in circuit  anti-interference ability, stable voice quality, clarity.   

8.When the telephone line is busy, the phone will automatically hang up.  

Signal voltage	DC48V
Standby operating current	≤1mA
Frequency response	250～3000 Hz
Ringing level	≥80dB
Defend Grade	IP54
Corrosion grade	WF2
Ambient temperature	-40～+60℃
Atmospheric pressure	80～110KPa
Relative humidity	≤95%
Lead hole	1-Ø14.5
Total Weight	3kg
Installation	Wall mounted