The SR2801E RF handset from Sunricher will control all four channels of the SR2501N receiver individually enabling each channel to be switched and dimmed independently of each other.
This facility allows multiple zone operation from one handset and one receiver.
There is a Master On/Off switch that will power all four channels together or you can switch / dim each channel by pressing and holding the appropriate power button on the handset.
The handset is supplied with a 3v Button Battery so works out of the box, just pair the handset to your receiver and you are ready to go.

Technical Specification
Product Code:    SR2801E
Product Packed:    Gift box
Product Type:    Controller
Colour:    Black
IP Rating:    IP20 Non-Waterproof
Guarantee Period:    5 Years
Input Voltage:    Battery Powered
Connectivity:    RF
Size:    136.3 x3 8.9 x 10.7mm
Dimmable:    No
Wireless Range:    Up to 20 metres
Continuous Operation:    Not suitable for 24/7 continuous use
Relative Humidity:    8% to 80%
Operation Frequency:    868/915/434MHz
Battery Type:    3V (1xCR2025 battery)
Operating Temp:    0-40°C