China Internet Analogue GSM Phone Loud Speaking Weatherproof Telephone Emergency Telephone, Find details about China Internet Telephone, Analogue GSM Telephone from Internet Analogue GSM Phone Loud Speaking Weatherproof Telephone Emergency Telephone
Operating Temperature | -30°C to +65°C |
Storing Temperature | -40°C to +75°C |
Ringing Tone | Shrill warble tone 80 dBA @ 1 metre typical |
M.T.B.F. | excess of 50,000 hours using |
Dialing | MF (tone) |
Lightning / Transients | Protection to ITU-T k.21 enhanced levels |