ES Series RF Transmitter and Receiver Modules Transmitters and Receivers for Analog or Digital Data Send or receive digital and analog data including audio with ES Series RF transmitter and receiver modules. Use the transmitter with a matching receiver to set up one-way wireless communication at 869MHz or 916MHz. Compared to 2.4GHz modules, narrowband modules from Linx provide longer range and lower current consumption at a more cost-effective price. Benefits Be creative: send or receive analog and digital data with few legal restrictions Integrate with ease: simple hardware configuration lets you transfer raw data without protocol constraints or the need for user programming Save power: low current consumption compared to competing modules extends battery life Simplify design: modules and antennas are the only RF components you need; no tuning required Streamline production: save time and money with modules that are already tested