IR Dual Transmitter Module:
Designed for use with paddles or keys from any manufacturer. Functionally analogous to the IR Dual Transmitter MP, but without control LED. This module is intended for installation in existing keys (31 x 22 x 15 mm). The power consumption is only 0.3 mA at keying, which allows 400 hours operation with the easily interchangeable CR 2032 lithium battery.