LM YN DC 12V 4-Channel Relay Control Module 4CH Relay Module Low Level Trigger With Red and Blue Indicators for Arduino

User Manual Download Link: https://www.amazon.com/clouddrive/share/VSWOS7iArxwj9Knf3wcQG6jfx6Z9zTYlir0suZeQpaO Module Description 1, The module uses genuine high quality relay, normally open interface maximum load: AC 250V / 10A, DC 30V / 10A; 2, Using high-power high-voltage transistor 2907A, strong driving capability, stable performance; trigger current 5mA; 3, Module working voltage DC12V; 4, The relay pull-low, the module contains a current-limiting resistor, low-level can be DC-, microcontroller I / O port can also be set low; 5, Fault-tolerant design, even if the control line is broken, the relay will not move; 6, Power indicator (red), 4 relay status indicator (blue); 7, User-friendly interface design, all interfaces can be directly connected leads, very convenient; 8, Module size: 74mm x 48mm x 18mm / 2.91 x 1.89 x 0.71 inch (L * W * H); 9, Weight: 39 g / 0.086lb; 10, With 4 fixing bolt holes for easy installation. Module interface Module control side: All interfaces can be directly connected , user-friendly 1, DC +: DC12V (another 5V and 24V module optional) 2, DC-: Ground 3, CL1-CL4: relay control interface, the corresponding low level pull the relay. Relay output: 12-wire interface (K1 to K4), all interfaces can be directly connected to the wiring, user-friendly 1, NO1 - NO4: relay normally open interface; 2, COM1 - COM4: relay common interface; 3, NC1 - NC4: normally closed relay interface. Package Included: 1*DC 12V 4-Channel Relay Control Module