Rajamane Telectric [P] Limited manufactures Dynamic Telephone Receiver. Rajamane Telectric [P] Limited is an ISO 9002 certified company. Dynamic Telephone Receiver is available in the weight of 37gms. Dynamic Telephone Receiver is available in the model no. Of RT-200. The sensitivity of the telephone receivers is 98 ± 2 dB [SPL at 1 KHz. At 100 m.V]. The resistance of the telephone receivers is 200 ± 20%. The frequency relative to the 1Khz response shall lie between the upper and lower limits of the telephone receivers.