RXB4 superheterodyne radio receiver module, is a superior performance of ISM band receiver module. Taiwan brand industrial RF wireless data transmission receiver chip, with high receiver sensitivity and strong anti-jamming capability, no external circuitry which can be done any wireless signal input to the data signal. Users need only a simple additional data decoding circuit, can easily achieve the development of wireless products. Product features: (1) sensitivity up to -112dBm; (2) operating frequency: 315MHz; 433.92MHz, (special frequency can be customized according to customer requirements). (3) Power supply voltage input range: 2.4V ~ 5.5V; (4) low power consumption, 2.7mA (315MHz), data transfer rates up to 10Kbps; (5) power enable mode is the lowest power consumption can be done 50nA ; (6) good selectivity and spurious radiation suppression, and easy through CE / FCC international certification; (7) Good local oscillator radiation suppression, can work with multiple receiver modules (ie single income) and not interfere with each other, used together does not affect the receiving distance. (8) Temperature range: -40-85 ° C, can work even in harsh ambient temperature; Applications: 1, remote control car door switch (RKE); 2, remote control door opener, Barrier; 3, wireless security alarm; 4, remote control curtains; 5, wireless data transmission;