20pcs 1 Channel 12V Level Trigger Optocoupler Relay Module For Arduino

Feature: 1 channel relay module, with photoelectric isolation High or Low level changeable(by a jumper setting trigger) The module uses genuine quality relay With power and relay action indicator Operating voltage: 12V Maximum load: AC 250V / 10A, DC 30V / 10A Size:44 x 24 x 17mm Weight: 16g Pins: DC+: Positive power supply (VCC)(12V) DC-: Negative power supply (GND) IN: The control end, the driving current should be more than 4mA COM: The control of loop of earth wire GND: Ground Notice: High Level Mode: the jumper is set between com and gnd (original). Low Level Mode: take down the jumper, connect VCC to VCC, GND to Control Terminal, IN to 5V, COM to GND. Package included: 20 x 12V 1 channel relay module