Operating Voltage

I. Working Voltage
On behalf of our products can work in the voltage range, such as home power supply in Japan voltage 100V, the United States, Taiwan, Canada voltage 110V, most other countries (including China) are 220V.
1,Working voltage: 90-240VAC 50/60Hz
Comparatively common working voltage, applicable to most products.
2,Working voltage: 24VAC
Safe working voltage, from the safety point of view, as long as the voltage below 36V products, are low-voltage safety products, certification is better.
Commonly used in the load is 24V products such as 24V electric actuator, 24V valves and other products.
3, operating voltage: USB power supply / 3V (2 AA or AAA batteries)
Commonly used in RF products, or battery wall-hung boiler products.
Why can't WIFI products use 3V battery power supply?
Because WIFI products need to keep communicating with the router (data reporting, APP query, server long connection, etc.), so WIFI products are more power consumption.