4 Channel 5v Relay Shield Module, Four Channel Relay Control Board Relay Expansion Board for Arduino For UNO R3 Mega 2560

Hign-concerned Chemical : None Package : DIP

Model Number : 4 channel 5v relay shield module Dissipation Power : 1 Supply Voltage : 1 Application : Computer Type : Voltage Regulator Operating Temperature : -40-+85 Origin : China Condition : New

100% brand new and high qualityRelay Shield (ie 5V Quad Relay Module) is a small current signal control power equipment commonly used electronic module, enabling high-power single-chip control devices are widely used in SCM system to make smart home project; and can be directly plugged into the compatible the use of various types of motherboards, eliminating the patch cable troubles.Module features are as follows:1. Standard For Shield interfaces and shape2. Can continue to stack other For  expansion boards3. 3 M3 screw positioning holes for easy installation4. High Drive (5V or 3.3V) normally open contact closure5. Onboard relay indicator (red)Special Note: When using the board connected to it, because USB interface is extremely high, should avoid green terminals are shorted its shell.Relay Shield Interface: (the last picture show)Relay: sky- 5V DC relay , model HJR-4102-L-5V, which Relay1 behalf of the 1st relay , the other and so on.Power Interface : 5V DC power interfaceIndicator: four lights are red when the relay is driven high , the corresponding indicator will light up .Relay Terminals: Terminal high-power , high-current high voltage can be connected to the device . The 1st foot ( i.e. NOx) is a normally open pin , NCx pin is normally closed , COMx is common, i.e., when the relay is not driven , NOx and COMx open between two pins , NCx and COMx connection ; When the relay (x) control signal pin is high drive relays , NOx and COMx connection open between NCx and COMx.

The line layout is compact and regular, with good electrical insulation and mechanical stability, and can maintain stable performance under different temperature and humidity environments to ensure accuracy and reliability.

In circuit design, carefully planned lines are like precision transportation networks, and lines of different widths and spacings undertake different currents and signals transmission tasks respectively. The key signal lines are impedance matching processing, which greatly reduces signal reflection and attenuation and ensures the stable transmission of high-frequency signals.

All kinds of electronic components are soldered on the circuit board, and the solder joints are full, round, and firm and reliable. Core components like chips are perfectly connected to the circuit board through fine packaging processes to achieve high-speed data processing and interaction.

This circuit board has a wide range of responses in many fields. Whether in the industrial control field that requires extremely high stability or consumer electronics field that pursues extreme performance, it can provide solid guarantees for the stable operation of the equipment with its excellent design and reliable performance, and help various electronic devices play a powerful role.