Operating: | -30°C to +65°C |
Storing: | -40°C to +75°C |
Ringing Tone | Shrill warble tone 90 dBA @ 1 metre typical |
M.T.B.F. | Calculated to have an M.T.B.F. in excess of 50,000 hours using |
Dialing | MF (tone) |
Lightning / Transients | Protection to ITU-T k.21 enhanced levels |
Weather Resistance | IP66-IP67 |