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It’s a433 Mhz 5V-12V 1 Channel Relay Module Wireless Remote Control Switch. It’s operating voltage is DC 5V-12V. This control switch can operate on operating temperature range -40~80 degrees. It’s operating frequency is 433MHZ and Receive sensitivity is -95dB
Specification

• Product: Wireless Remote Control Switch
• Operating voltage:DC 5V-12V
• Operating temperature:-40~80 degrees
• Operating frequency:433MHZ
• Working Mode: jump switch, point action, self-locking, and interlocking(adjustable)
• Switch size: approx. 40 x 40 x 25mm/1.57 x 1.57 x 0.98in