Features: (1) the receiving sensitivity reaches -111dBm; (2) operating frequency: 433.92 MHz; (3) power supply voltage input range: 3.3V-5.5V; (4) low power consumption, 5.0V 4.8mA (5) good selectivity and spurious radiation suppression, easy to pass CE / Fcc international certification; (6) good local oscillator radiation suppression capability, can be a number of receiving modules work together (that is, single and more) and will not interfere with each other, do not affect the use of the reception distance; (7) Temperature range: -30-85 ℃ even in harsh ambient temperature can work properly; (8) 30.5 × 10 × 5.00 (mm). Applications: (1) car remote control door switch (RKE); (2) remote control door machine; (3) wireless security alarm; (4) wireless doorbell; (5) a wireless controller; (6) wireless data transmission.