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Telephone Receiver Intercom Receiver SD153 SD-153 150 Ohm 150ohm 60 Ohm 60ohm 70 Ohm 70ohm 28*27mm, 28X7mm, High Sensitivity, Find Details and Price about Telephone Receiver Wireless Telephone Receiver from Telephone Receiver Intercom Receiver SD153 SD-153 150 Ohm 150ohm 60 Ohm 60ohm 70 Ohm 70ohm 28*27mm, 28X7mm, High Sensitivity - Changzhou Esuntech Co., Ltd.