2 Channel LM393 Comparator Module 2CH DC 12V 52mA by OEINEFIEMRI

Description

Product Overview

The 2 Channel LM393 Comparator Module by OEINEFIEMRI is engineered to provide precise voltage comparison across two independent channels. Built around the classic LM393 dual comparator IC, the module operates from a 12 V DC supply and draws a modest 52 mA, making it suitable for battery‑powered and low‑power installations. Its compact PCB layout measures just a few centimeters on each side, allowing easy integration into breadboards, prototype rigs, or permanent enclosures. The module includes clearly labeled input pins for each channel, a common ground, and a VCC connection, simplifying wiring and reducing the chance of mis‑connection. High‑quality resistors and protective components are used throughout the circuit to ensure stability, reduce noise, and protect against voltage spikes. The design follows industry‑standard practices for signal comparators, delivering fast response times and reliable hysteresis control.

Usage

This comparator module shines in a variety of real‑world scenarios. Hobbyists can employ it in DIY resistor‑divider projects to monitor battery levels, solar panel output, or sensor voltages, triggering alarms or switching loads when thresholds are crossed. In industrial settings, the module can be used to create simple analog‑to‑digital conversion stages for process control, feeding clean digital signals into PLCs or microcontrollers. Automotive enthusiasts may integrate the module into custom gauge clusters or safety systems, where reliable voltage detection is critical. The low current draw enables deployment in remote or portable devices, such as environmental monitoring stations, where power efficiency is paramount. Its dual‑channel architecture allows simultaneous monitoring of two separate signals, reducing component count and board space.

Why Choose Us

Choosing the OEINEFIEMRI LM393 Comparator Module means selecting a product backed by rigorous quality assurance and a commitment to customer satisfaction. Each unit is assembled using premium electronic components sourced from reputable manufacturers, ensuring long‑term reliability and consistent performance. The module undergoes thorough functional testing before shipment, guaranteeing that every comparator channel meets specified voltage thresholds and response times. Our team provides detailed documentation, including wiring diagrams, application notes, and troubleshooting guides, to help users get up and running quickly. In addition, we stand behind our product with a money‑back guarantee and responsive technical support, ready to assist with integration questions or design advice. This combination of high‑quality parts, thorough testing, and dedicated after‑sales service sets our module apart from generic, unbranded alternatives.

Key Features

• Dual‑channel LM393 design enables independent monitoring of two voltage sources.
• Low power consumption of 52 mA keeps operating costs down and extends battery life.
• 12 V DC supply compatibility fits common industrial and hobbyist power rails.
• Compact PCB layout saves space on crowded prototype or production boards.
• Exceptional customer support with detailed documentation and a money‑back guarantee.

FAQ

What is the maximum input voltage for each channel?

The comparator inputs can handle voltages up to the supply voltage (12 V) without damage, but it is recommended to keep the input range within 0‑10 V for optimal performance.

Can the module be used with microcontrollers that operate at 3.3 V?

Yes. The LM393 output is an open‑collector type, allowing you to pull the output up to 3.3 V with an external resistor, making it compatible with 3.3 V logic levels.

Is there any built‑in hysteresis to prevent rapid toggling?

The basic module does not include fixed hysteresis, but you can add external resistors to create the desired hysteresis level for noisy environments.

How do I connect the module to a breadboard?

Simply align the module’s pin header with the breadboard rows, ensuring VCC connects to a 12 V rail, GND to ground, and the input pins to the signals you wish to compare. The output pins can then be routed to your microcontroller or relay driver.

What warranty does the product include?

OEINEFIEMRI offers a 30‑day money‑back guarantee and a one‑year limited warranty covering manufacturing defects, backed by responsive technical support.