PM4432 wireless module is used Silicon Laboratories the Si4432 chip to develop high performance,High stability of the wireless module.This module USES the SI4432 - B1 version of IC design,Stable and reliable performance,Don't crash.Effective communication distance 800 to 1000 meters,Farthest under low speed to 1800 m.No lead,Products easily through RHOS testing;harmonic,Easily through the electromagnetic interference detection.Small size.This module has the very high cost performance,Is the practical application in 100 meters to 1000 meters between an ideal choice. Characteristics  1.Frequency range:433/868(240-930 MHZ can be customized) 2.The sensitivity:As high as 121 DBM 3.Maximum output power:13dBm 30mA@+13dBm (emission) 100mA@20dBm 4.Data transfer rate:0.123-256kbps 5.Modulation mode:FSK,GFSK and OOK 6.power supply:1.8-3.6 V 7.Ultra low power off mode 8.Digital receiving signal strength indicator(RSSI) 9.Regular wake up function 10.Antenna automatic matching and two-way switch control 11.Configurable data package structure 12.Before the synchronous signal detection 13.64 bytes to send and receive data registers(FIFO) 14.Low power testing 15.Temperature sensing and 8 bits of AD converter 16.Working temperature range:-20~+60°C 17.Integrated voltage regulator 18.Frequency hopping function 19.Power on reset function 20.Built-in crystal error adjustment function Range of application Wireless ordering equipment Industrial remote control Remote telemetry Queuing system Small wireless network,The wireless meter reading Entrance guard system,Village pager Industrial data acquisition system Small wireless data terminals Fire safety system The wireless remote control system Biological signal collection Hydrologic meteorological monitoring Robot control Wireless alarm system, etc