Power supply: battery Power supply voltage: AC 100–240 V Power consumption: 10 W Ringtones: 35 LONG WIRELESS RANGE — Uses FSK + FHSS wireless transmission technology to minimize interference from other wireless signals. Wireless range from remote push button to plug-in receiver is up to 1000 feet (actual range may vary depending on environment). Signal can penetrate doors, walls, and floors. 35 CLASSIC MELODIES — Offers 35 built-in melodies. Volume adjustable across 4 levels. Includes LED flash indicator. Can be used as a doorbell, emergency alert button, classroom signal, or pet training aid. EASY SETUP — Receiver plugs directly into any standard outlet. Remote push button mounts easily using included double-sided adhesive tape. Push button is IP65 rated for outdoor use. EXPANDABLE SYSTEM — Kit includes 1 plug-in receiver and 2 remote push buttons. Compatible with HTZSAFE solar wireless driveway alarm systems. Supports up to 32 sensors and unlimited receivers for full property coverage. Assign different melodies to different sensors to identify detection locations—for example, “Ding Dong” for front door and “Jingle Bells” for backyard.