Чистая комната телефон

Features: 1.Imported PE membrane panel, smooth surface. 2.38mm thickness, embedded installation to keep the same level with the wall. 3.Waterproof, the surface can be cleaned. 4.No need of picking up the phone, no pollution caused by touch. 5.Touch pressing buttons, built-in telephone transmitter and telephone receiver. 6.No taking space; no accumulative dust; the line is in. Specification: 1.Environment temperature: -10 +40 2.Relative humidity: 45 95% 3.Pressure: 86 106K Pa 4.Environment noise: 60dB(A) 5.Working frequency: 300 3400Hz 6.Loudhailer: 25Ω 7.Ring level: more than 70dB(A) 8.Panel size: 200mm×120mm 9.Box size: 172mm×104mm×38mm Functions: 1. Redial 2. Silence 3. Pause 4. Handle-free