Features: Alternating current single circuit controllers, programmed with main controllers chip, low power consumption and fast receiving response. Wide voltages single circuit remote controlled switches, alternating current small square box controllers, three working type switching. Quality materials, temperature resistant and flame retardant housing, not flammable. Superheterodyne receiver module receives sensitive and strong interferences resistance. Easy installation, can be used in lighting control, ventilation equipment, garden sprinkler and other scene. Specifications: Material: ABS Frequency: 315, 433(optional) Size: about 3.6x3.9cm/1.42x1.54inch Working voltage: AC100-240V Receiving sensitivity: -105dBm Package Includes: 1x Single Channel Remote Receiver note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.