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TEL-REMOTE
- 1.電話筒掛著時,其兩端電壓約為DC48~50V. 2.震鈴信號為正旋波VP-P=100V,20HZ 3.電話筒拿起時,其兩端電壓為DC5V-1. telephone handsets hanging, the voltage across about DC48 ~ 50V. 2. ringing signal is sine wave VP-P = 100V, 20HZ 3. Pick up the telephone receiver, the voltage for DC5