These RF receiver modules are very small in dimension. The low cost RF Receiver can be used to receive RF signal from transmitter at the specific frequency which determined by the product specifications. Super regeneration design ensure sensitive to weak signal. Specfications: *Voltage:DC5V *Modulation: ASK *Current:4MA *Frequency:433.92MHZ *Data Output: High - 1/2 Vcc, Low - 0.7v *Sensitivity:-105DB Applications: *Remote controller,receive modulr,car bugular alarm,Rolling door,window,remote control LED, Amplifer and so on.