Features a small volume, high sensitivity; two frequency debugging easy, short lead times; 3 product quality consistency, and cost-effective. Technical parameters Operating voltage DC5V Operating frequency 315 / 433.92MHz (other frequencies can be customized) Working current 3.5-4.5mA decoding receiver sensitivity -103dBM modulation amplitude (00K) Operating Temperature -10 ° C ~ + 70 ° C product scale 30 * 14 * 7 Pin Description Pin Name Function Description 1 ANT connect the antenna terminal 2 VCC positive power supply 3 RXD Data Output 4 CNG negative power supply voltage Note 1 VCC voltage to be consistent with the module, and the power to do the filtering; 2 antenna reception module great influence, the best pick 1/4 wavelength antenna, generally use 50 ohm single-core wire, the length of the antenna is about 315M 23cm, 433M is about 17cm; 3 antenna reception is also the location of the module influential, install the antenna stretched as far as possible away from the shield, high pressure, and local sources of interference; 4 reception frequency use, decoding and oscillation resistance should be matched with the launch; 5 applications: wireless remote control, data transmission, remote control toys, burglar alarm.