Features: 1,Regeneration Decoder Receiving Module 2,Operating in ISM band 3,Various size available 4, ... Operating current: 5mA Operating frequency: 315, 433 MHz Spec.: 43*26*12 Sensitivity: >-85dbm The pin: From left to right VT ... , D3, D2, D1, D0, +5V, GND wireless regeneration decoder receiving Module for home alarm