Isolated 16-way relay control module, select high-level or low-level signal trigger, only 5mA current can drive the relay with a control ability of 10A, the module adopts high-quality power relay, small package optocoupler, high power High voltage triode, blue signal indicator, grade double-sided PCB board, comprehensive board layout, stable performance, can be widely used in power control occasions. Increase the power supply anti-reverse connection function, the wrong power supply will not damage the module; fault-tolerant design, the control line is broken, the relay will not act; The module adopts high-quality relays, normally open interface load: AC 250V/10A, DC 30V/10A; Using high-quality small two-way isolation optocoupler, strong anti-interference ability, stable performance; trigger current only needs 5mA; The working voltage of the module is 12V, 16 modules The user can select the control level of the relay, which can be high-level pull-in or low-level pull-in; the module has a built-in current limiting resistor, which can be directly controlled by the positive and negative poles of the power supply, or the I /O port control; Power indicator 16-way relay status indicator (blue) The interface design is user-friendly, all interfaces can be directly connected through the terminal block, which is very convenient There are 4 3mm fixing bolt holes for easy installation Two module interface Module control terminal: 19-wire interface, all interfaces have wiring terminals, which is convenient for users to wire 1. DC+: The positive pole of an external DC power supply (12V) 2. DC-: External DC power supply negative 3. XM: common terminal of photoelectric isolation chip If high level control is adopted: this signal should be connected to the negative pole of the power supply of the usercontrol board If low level control is used: this signal should be connected to the positive pole of the user control board power supply 4. X1-X16: Relay control interface, Colour:Photo Color Material:plastic Size: 15.2cm x 10cm x 2.0cm (length x width x height) Package Contents: 1 x relay control module Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.