The eagle 2 way talk through glass intercom is ideal for use in shops, security lodges, receptions, post offices, petrol stations and banks; in fact anywhere that conversation needs to take place but communication is difficult because of security / health screens. The intercom is fully automatic, hands-free and two-way, with a desk mount base station and condenser goose-neck microphone on the main unit. The main unit has a high quality speaker and the volume on both the inside and outside speaker can be adjusted. The unit has a special microcomputer voice processing circuit to help solve the problem of echo and feedback and adjustable internal and external mic volume controls, the unit has been designed for long term use. Supplied with a plug in 12v power supply.