Specification: Origin: Mainland China Type: Module Condition: New Supply Voltage: 12V(DC) Supply Current: More Than 200mA Each Relay Can Load: 250V 10A (AC) Or 30V 10A (DC) Applications: 1. 12V relay contact capacity 10A 250V with optocoupler protection. On-board power supply module does not require external power supply.I/O port drive low level active. 2. Can be used as microcontroller development board module, can be used as home appliance control, can also be used as PLC expansion output. Module highlights: 1. Control signal voltage range: trigger signal for low level 0-2V; high level voltage can not exceed 5V. 2. The use of isolated optocoupler, anti-interference ability, stable performance; trigger current only 3mA. 3. 1-16 road can be any . Department on/off, or any road. 4. The output form: directly connected to AC 220V 10A or DC30V 10A load. 5. Each relay public terminal COM are DU stand, convenient for users to access different signals, each relay with normally closed and normally open port. 6. Each relay is equipped with an action indicator, which is bright when it is activated and off when it is deactivated. 7. Interface design humanization, all interfaces can be directly connected through the terminal leads, very convenient. 8. With 4 fixed bolt holes, easy to install. 9. PCB board size: 180MM (L) * 90MM (W) * 20MM (H) / 7.02 * 3.51 * 0.78in Product use instructions: 1. The power supply should be in accordance with the scope of use, DC 12V; 2. Power supply according to the requirements of the wiring diagram, can not be reversed;  3. The product uses LM2596S buck chip slightly heat, is a normal phenomenon, the relay also has a long time work normal heating phenomenon, are normal phenomena; 4. Load power to the relay load to leave a certain margin, should avoid high-power (2000W or so) and long working hours of the environment, the product life will have a certain impact! Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Included: 1*Relay Module Trigger Board 1.Safety Protection: This 16-channel 12V relay module trigger board features optocoupler protection and a built-in power module, ensuring a safe and reliable operation. The low-level trigger input effectively controls the relay with an I/O interface. 2.Wide Applicability: Suitable for various applications, this relay output mudule can be used as a development board module for single-chip microcontrollers, home appliance control, or PLC extended output. It offers versatility to meet your specific needs. 3.Strong Interference Resistance: Equipped with isolated optocouplers, this relay switch module provides exceptional interference resistance, guaranteeing stable performance even in challenging environments. With a trigger current requirement of only 3mA, it ensures reliable operation. 4.Excellent Performance and Stability: The control signal voltage range is between 0-2V for low-level trigger signals, while high-level voltages should not exceed 5V. Every power relay module can be independently opened/closed, allowing flexible configuration. The module supports direct connection to AC 220V 10A or DC 30V 10A loads. 5.Comprehensive Functionality: Designed with user convenience in mind, each relay module smart expansion board's COM terminal is independent, enabling easy connection to different signals. Each relay also features normally closed and normally open ports. With indicator lights for relay actions, you can easily monitor the status of each channel. The module offers a user-friendly interface design with accessible terminal blocks and convenient installation using four fixed bolt holes.