Professional and exquisite workmanship makes it have strong driving ability and stable percompatiblemance. Multiple working voltages allow you to choose the most suitable one according to your needs. Fault-tolerant design makes the relay will not move even if the control line is broken. And the humanized interface design enables all interfaces to directly connect through the terminal blocks. Made of PCB material, it is very durable to use. The length of this product is 5cm, the width is 2.6cm and the height is 1.85cm. It is suitable compatible circuit testing, experiment, workshop, controlling, DIY and so on. Item Name: Relay Module Material: PCB Power Indicator: Green, Relay Status Indicator: Red Features: Settable, Convenient to Use, Stable Percompatiblemance Maximum Load of Normally Open Interface: AC: 250V/10A, DC: 30V/10A Module Interface: 1. DC+: Connect to the positive pole of the power supply (the voltage is according to the requirements of the relay, there are 5V.9V.12V and 24V options) 2. DC-: Connect to the negative pole of the power supply 3. IN: It can control the relay to close at high or low level Relay Output: 1. NO: The relay is normally open interface, the relay is suspended becompatiblee it is closed, and it is short-connected to COM after it is closed 2. COM: Relay common interface 3. NC: Normally closed interface of the relay, the relay is short-connected with COM becompatiblee it is closed, and it is suspended after it is closed Technical Parameter: Relay Version: 5V, 12V, 24V Quiescent Current: 5mA Maximum Current: 190mA (5V), 80mA (12V), 50mA (24V) Trigger Current: 2-4mA Trigger Voltage (Low): 0-1.5V (5V), 0-4V (12V), 0-8V (24V) Trigger Voltage (High): 2.5-5V (5V), 4.5-12V (12V), 8.5-24V (24V) Size Details: Size: 5cm x 2.6cm x 1.85cm/1.97" x 1.02" x 0.73" (Approx.) Fixing Bolt Hole: Hole Diameter: 0.31cm/0.12" (Approx.) Spacing: Size: 4.45cm x 2.05cm/1.75" x 0.81" (Approx.) Notes: 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. Package Includes: 1 x Relay Module