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"Power Supply: Low-consumption battery operationNotification: 90db on-site siren Radio Frequency: 868MHzTransmitting Distance: ≤ 100m (open area/ no interference)Operation Condition: Temperature -10°C/ 14°F ~ +55°C / 131°FSmall size, safe and convenient to use.DIY self-installationPair accessories manually for easy operation.52 built-in doorbell songs+4 adjustable volume"
"Smart sensor doorbell (main unit) Power: DC 6V (two 3V CR123A batteries) Volume: 90dBStandby current: 170uA Temperature: -10°C +55 °CDoorbell buttonPower: DC 3V (two 3V 2032 button cell)Wireless transmission distance: ≤100m (in an open space / with no interference)SOS button (panic button)Power: DC 3V (two 3V 2032 button cell)Wireless transmission distance: ≤100m (in an open space / with no interference)"
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