The CILA-100 is a induction loop coil will allow users with hearing aids having a T facility to hear clearly information being relayed by the CA100 security system and Optional extra for use with the CA100 security intercom system. The Induction Loop antenna is plugged into the CA100. Audio signals from the Communicator CA100 security intercom amplifier are transmitted as a weak magnetic wave which can be received by any person / persons using hearing aids that having an Induction Loop Telecoil fitted (T). Typical range of 1 Metre square is obtained. The audio / field strength of the induction field can be adjusted by controls fitted on the CA100 amplifier. The international “T” symbol is used to show where such induction loop systems are being used. Loop antenna conforms to BS6803 pt 4 1981. Field strength mean -20dB, field strength max -8dB Ref 1A/Metre. Finish: Matt Grey.