wireless doorbell battery 12v zinc manganese 23AProduct overviewType : Alkaline High Voltage BatteryChemical System : Zinc/Manganese DioxideNominal Voltage : 12.3VNom...
when you press the key on the transmitter, the self-powered coils of the inner module will be moved. it can transfer the kinetic energy into electrical ene...
PH3-3907B wireless music doorbell new type (BATTERY TYPE )1) · Suitable for homes, office installed in or outdoors buildings and ships etc.
2) · 25 sounds selectable at either tran...