Smart Remote Control Wireless Doorbell

Product information: Working voltage: AC100-230VApplicable type wireless doorbell switchWorking current: <100mAWorking temperature: -10ﾰC~50ﾰCProduct material: ABS flame retardant materialLine frequency: 433MhzApplicable places: indoor generalAdditional support: 1527/2262 encoding chipProduct specificationsA: One switch and one speaker for the basic model (send installation package),B: Basic model with one switch and two speakers (send installation package),C: Basic model with two switches and one speaker (send installation package),D: One switch and one speaker for the upgraded model (send installation package),E: Upgrade model with one switch and two speakers (send installation package),F: Upgrade model with two switches and one speaker (send installation package),G: Outdoor doorbell switch [cannot be used if purchased separately],H: Basic doorbell horn [cannot be used if purchased separately],I: Upgraded doorbell horn [cannot be used if purchased separately]