Expander module with 4 inputs / 4 outputs via bidirectional radio. Supports X-10 automation protocol (16 devices). Bidirectional wireless communication. 2 Relay Outputs (3 A) and 2 Outputs Open Collector (500 mA). 4 Inputs (NC, NA or RFL). Fully supervised Tamper box and wall. Includes local transformer and rechargeable batteries. Maximum consumption: 0.35 A. Dimensions: 145 x 90 x 40 mm.