M2 Wireless Doorbell Household Built-in Elderly Beeper Category Pit Position Link

Product information: Power mode: built-in button battery Product Specifications: M2/Low Power/Built-in Button Battery/White Power supply voltage: 3.7 Model: M2 Scope of application: household, office, etc Order number: M2 Ringing: ringing Type: Wireless Doorbell Package: 1 * Wireless Doorbell