HM-T series FSK transmitter module is specially designed by Hope Microelectronics Company for replacing those applications that used ASK technology module already. It used together with HM-R series FSK receiver module. Due to the benefits from FSK technology, the module is robust to interference, and longer working distance can be achieved. Features: 1) Highly integrated, small size 2) High sensitivity, low power consumption 3) FSK technology, suitable for replacing ask modules 4) Less interference, longer working distance 5) Can be used to replace ask module without the need of software change 6) No tuning required during production 7) Application: pin to pin replace the old ASK module. Special design can be made for more sophisticated applications