Features 1、3.3V 5V: Fully compatible with 3.3V and 5V TTL control signals, making the relay module versatile and easy to interface with different systems. 2、MULTI USE: Relay module, capable of controlling both DC and AC signals, allowing for control of AC loads ranging from 0‑250V. 3、NO NC CONTACT: Equipped with both a normally open and a normally closed contact, providing flexibility in switch control applications. 4、LIGHT INDICATOR: Features a control indicator light that illuminates when the control signal is high, providing visual feedback for easy monitoring of relay status. 5、EXCELLENT PERFORMANCE: Utilizes a transistor driven relay coil, ensuring efficient and reliable operation. The module also includes optocoupler isolation, offering strong anti interference capabilities and stable signal transmission. Specification Item Type: Small Relay Module Material: PCB Supply Voltage: 3.3-5V DC Triggering Level: 5V Version :3.3V-7V triggering Triggering Current: about 3-5MA (such as 3.3V MCU control, need to have 10 push pull output function) Control Voltage: AC 0-250V or DC 0-30V Control Current: 0-3A1, can be used as a single chip microcomputer development board module, can be used as a small home appliance control. Package List 1 x Module