88970826 is a wireless digital extension module (XT01) designed for use with XD10 and XD26 controllers. It enables wireless RF transmission of up to 8 digital inputs using Linx Technologies Keyfob transmitters operating at 418 MHz, with a typical transmission range of 100 feet and a maximum range of 1000 feet. The module features a built-in antenna and is powered directly via the controller, supporting 100-240 VAC controllers. It operates within a temperature range of -20°C to +55°C and offers IP20 protection, complying with FCC Part 15 Class A digital device limits. This extension is ideal for remote control applications where wireless digital input expansion is required.