HM-E is ideal for remote controlling systems. The module is equipped with 6 bit length address code and 4 bits data formats, and the data is FSK modulated for data transmission at the frequency range of 315MHz, 434MHz, 869MHz, and 915MHz. ETSI and FCC regulation can be easily met. Features: 1) Low costs, high performance 2) Very few external components 3) 2.2V to 5.4V working voltage 4) Low standby current: typical 0.3uA/3V \'\'D0-D3 floating\'\' 5) Falling edge on I/O triggers data packets and FSK transmission 6) Used in conjunction with Hope\'\'s HM-D decoding module 7) 15 PIN DIP/15 PIN SOP package 8) Typical application a) Automobile door opener b) Garage door opener c) Anti-theft system d) Home security e) Electrical home appliance control f) Wireless toys g) Other wireless systems