Tele-net manufactures `various types of industrial tele phones for both safe and non hazardous areas of the plant. These telephones are required where use of normal telephones is prohibited either due to safety regulations or due to environ mental conditions or due to high - ambient noise. The company offers two models of industrial phones: flameproof telephone; and weatherproof telephone. The flameproof phone is intrinsically safe and is suitable for all hazardous areas of gas groups i, iia, iib and iie. The weatherproof phone is ip 66 protected and is suitable for all non-hazardous areas. Some of the features of these phones are: robust, material of construction aluminium tone dialling, line powered, noise-cancelling microphone, external fibre canopy, built-in ringer, highly reliable, efficient operation, low cost and good clarity in speech.
