SONOFF RF-REMOTE remote control, RF 433MHz

Remote control Sonoff RM433R2, 4 buttons
Features:
The remote control operates at a RF frequency of 433 MHz. It has 4 buttons, with which it can control 4 different Sonoff devices. Suitable for Sonoff RF, Slampher, 4CHPRO, RF Bridge, TX series wall switches and other devices that support the 433MHz communication protocol.
Small and convenient, the size of a keychain.
Note: Battery is purchased separately.
Technical specification:
Compatible with: Sonoff TX series, RF Bridge, 4CHPRO, etc.
Frequency: 433MHz.
Control distance: 20-30m.
Number of buttons: 4.
Supported battery: 1x 12V / 27A (battery not included).
Material: ABS.
Safety class: V0 (fireproof).
Dimensions: 50mm x 30mm x 12mm.
Weight: 27g.
Color: black/blue.
Warranty: 24 months