Works as advertised - ready to use. A CR2032 battery was included. only (3) AA are required. Good range, easy to install. Was already a couple. The bells sound a little "electronic", but they are electronic and have a speaker. It doesn't have the old traditional bells and magnet to strike them. This is quick and easy without cables! I used a self-adhesive button to attach the button instead of screws as the holes don't line up with the previous ones so we'll see how long that takes. But screws are a fallback. The button block is also not airtight, so over time moisture, condensation, etc. will likely corrode the electronics and battery, like this one. But for the price it was worth it.
Wireless Doorbell Chime - AVANTEK Mini Waterproof, 1000 Feet Range, 52 Melodies & 5 Volume Levels With LED Flash
31 Review
Stay Connected With A 1000 Feet Range - SadoTech'S Baby Blue Wireless Doorbell With LED Flash
32 Review
Universal 24V 40VA Thermostat / Doorbell Transformer: Compatible with Honeywell, Nest, Sensi, Ecobee, Nest Hello, and Ring Doorbells
43 Review
π Adjustable Anti-Theft Video Doorbell Mount Bracket - No Drilling, Unobstructed Doorbell Motion Sensor - Ideal Mounting Accessories for Homes, Apartments, and Offices
31 Review
Wireless Electronic Ballast Interface Certified
8 Review
π‘ Electronic FL Ballast ICN-4P32-N (Formerly ICN-4P32-SC) for 3-4 F32T8 F40T8 F17T8 Lamps, 120V/277V Compatibility
5 Review
Fulham WorkHorse WH2-120-C Adaptable Ballast - 2 Pack
3 Review
Robertson Worldwide ISL432T8HEMV AH 3P20160 120-277V 50-60Hz High Power Factor 4 F32T8 Linear Lamp Fluorescent eBallast
6 Review