Product Review

This is what you need for your doorbells and thermostats, you could be able to charge 2-3 devices the same time with more stable condition, which is a really time-saving tool!

Specification:
Input voltage: 120V AC, 50/60Hz
Output voltage: 24V AC at 40 VA
Ring doorbell Pro transformer Dimensions: 9*4.8*6.2CM / 3.5*1.9*2.4 inch
Package Dimensions: 10.5*6.3*8CM / 4.1*2.5*3.1 inch
Transformer type: UL 5085 Class transformer

This doorbell/thermostat transformer has passed UL certificate,ensuring you have a quality, reliable transformer that will pass inspection

Compatible with:
Doorbells Ring Video Doorbell
Ring Video Doorbell Pro
Ring Video Doorbell 2
Nest Hello Doorbell
Zmedo Doorbell

Thermostat
honeywell 24v transformer, Honeywell Smart WiFi Thermostat
Sensi Thermostat
Nest Thermostat
Ecobee Thermostat

Package includes:
1 x Instruction
1 x 24v Transformer