Remote Relay Switch 4 Channel Relay Module For Lamp Garage Electric Windows description : (Remote switch can be controlled remotely or manually) Dual power modes, switching multiple modes. [Wide Application]: Water pump switch Mainly used in lamps, electric doors, windows, lifting equipment. Water pump, elevator control, safety industry and agricultural irrigation and other fields such as long distance wireless remote control have the advantages of convenient installation, simple operation, safety and reliability. [Output mode]: motor switch contact output and voltage output. You can change the operating mode by switching the switch yourself, simply and conveniently [Multifunctional] Multifunctional 4 Channel Remote Control Switch with Manual Control, Yoga, Self Locking, Lock Mode. [High sensitivity] remote control switch button is sensitive, stable to use and responds quickly. Specifications: Operating voltage: DC12V-36V Operation: 433 MHZ Channel: 4 channels Receiver Sensitivity: : -105dBM Size Chart: 9,5 cm x 6,2 cm x 2,8 cm/3,74 inch x 2,44 inch x 1,10 inch The package includes: 1 pilot 1 receiver Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.