Feedback Voltage: 48V DC, 25mA minimumRinging Voltage: 90V 25Hzdialing tone frequency: 450HzPower supply: 110/ 220VAC, 50/60Hz
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SHENZHEN YINGXIN ELECTRONICS CO., LTD.VIP会员第13年
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Feedback Voltage: 48V DC, 25mA minimumRinging Voltage: 90V 25Hzdialing tone frequency: 450HzPower supply: 110/ 220VAC, 50/60Hz