With optocoupler; 1 channel relay module; 1 relay; relay expansion board; high and low trigger

A module description: 1, the module uses genuine high-quality relay, normally open interface Maximum load: AC 250V / 10A, DC 30V / 10A; 2, the use of patch optocoupler isolation, drive ability, stable performance; trigger current 5mA; 3, the module operating voltage 5V, 9,12 V, 24V to choose from; 4, the module can be set by jumper high or low trigger; 5, fault-tolerant design, even if the control line break, the relay will not move; 6, power indicator (green), relay status indicator (red) 7, user interface design, all interfaces can be directly connected through the terminal leads, very convenient 8, the module size: 50mm * 26mm * 18.5mm (L * W * H) 9, with 4 fixed bolt holes, holes 3.1mm, spacing 44.5mm * 20.5mm Two module interfaces: 1, DC +: then the power supply positive (voltage according to the relay requirements, with 5V.9V.12V and 24V choice) 2, DC-: connected to the power supply negative 3, IN: can be high or low level control relay pull Relay output: 1, NO: relay normally open interface, relay pull before the suspension, after the connection with the COM shorted 2, COM: relay common interface 3, NC: relay normally closed interface, the relay before the connection with the COM short, pull after the suspension High and low trigger select side: 1. jumper and LOW short when the trigger is low; 2. When the jumper and high shorts are high, the trigger is high.