ITEM NAME:4 Way Channel 5V Relay Module Relay Shield Control Board Expansion Board #JT1 Product Description Description: 4 Way Channel 5V Relay Module Relay Shield Control Board Expansion Board for Single Chip Microcomputer System Description: 1. Relay shielding (5V four-way relay module) is an electronic module commonly used in small current signal control power supply equipment. 2. It can make high-power single-chip control equipment widely used in single-chip computer system and make smart home projects. 3. It can be directly inserted into various types of motherboards to use, eliminating the trouble of patch lines. Feature: 1. Standard shielding interface and shape. 2. You can continue to stack other expansion boards. 3. 3pcs M3 screw positioning holes for easy installation. 4. High drive (5V or 3.3V) normally open contact closure. 5. On-board relay indicator lamp. Specification: Package size: 115mm*90mm*20mm/4.52*3.54*0.78'' Packing weight: 37g Warm Tips: 1. When using the UNO board to connect to it, because the UNO USB interface is very high, the green terminal should be avoided from its shell. 2. Relay shield interface: Relay: Sky-5V DC relay, model HJR-4102-L-5V, where Relay 1 represents the first relay, and so on. 3. Power interface: 5V DC power interface. Indicator lamp: When the relay is driven at high level, the four indicators are red, and the corresponding indicators will be turned on. 4. Relay terminals: terminals can be connected to equipment with high power and high current and high voltage. The first foot (i.e. NO x) is normally open pin, NCx pin is normally closed, COMx is common, that is, when the relay is not driven, NOx and COMx are disconnected between the two pins, NCx and COMx are connected; when the relay (x) control pin is a high-drive relay, the NOx and COMx connections between NCx and COMx are disconnected. Note: Please allow 1-3cm differs due to manual measurement. Due to the different display and different light, the picture may not s.Find many great new & used options and get the best deals for 4 Way Channel 5V Relay Module Relay Shield Control Board Expansion Board #JT1 at the best online prices at shop2india!