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Control high-power loads via I2C with this compact 1-channel relay module. Features the XL9535 expander, optocoupler isolation, and selectable addresses for chaining multiple units.
The Pin Scarcity Problem Are you hitting the limit of your microcontroller's digital capabilities? It’s a common bottleneck in growing projects: you want to add "just one more" heavy-duty switch for a fan or solenoid, but your Arduino Uno or ESP32 is already maximizing its GPIOs for sensors and displays. Standard relays are "pin-hungry," demanding a dedicated wire for every single channel. This limitation often forces makers to upgrade to expensive, larger boards just to get a simple switch working.
The XL9535 1-Channel I2C Expansion Relay Module solves this by shifting the control logic to the I2C bus. Instead of occupying a digital I/O pin, this smart module piggybacks onto the existing SDA/SCL lines you are likely already using for a display or sensor. By utilizing the robust XL9535 16-bit I/O expander architecture, this board listens for specific address commands, allowing you to control high-power AC or DC loads with zero additional pin overhead. It effectively transforms a mechanical switch into an addressable digital node.
This module represents a shift from "Direct Wiring" to "Bus Architecture." Once you master this module, you unlock the ability to chain multiple devices. Because the XL9535 supports hardware address selection, you can daisy-chain multiple relay modules on the same two wires. This is the exact architecture used in professional home automation systems to minimize cabling. Whether you are building a distributed smart home network or a complex robotics control unit, this module scales with your ambition.
Specifications:
Applications:
Virtual Technician: Wiring Guide
Project Evolution
⚠️ Probots Logic-Safe™ Warning: While the XL9535 is robust, always ensure your I2C pull-up logic matches your microcontroller voltage (3.3V for ESP32/Pi, 5V for Arduino AVR). The relay coil must have a clean 5V source.
Package Including :
1 X XL9535 1-Channel I2C Expansion Relay Module - 5V
1 X Jumper wire Connector
Frequently Asked Questions (FAQ)
| Operating Voltage: | 5 V |
|---|---|
| Max Current: | 10 A |
| Number of Channels: | 1 Channel |
| Trigger Type: | Low Level |
| Isolation: | Opto-Isolated |
| Interface Type: | I2C |
Probots sells every Electronics Part for your next Project. You can order 10,000+ Electronic Parts Online - Arduino, Raspberry Pi, NodeMCU Development Boards, Sensors, Motors, Motor Drivers, SMPS, Plastic Enclosures etc in India directly on probots.co.in
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This item is covered by a warranty of 7 days from the date of delivery, against confirmed manufacturing defects only, as verified by Probots' own testing and investigation. In case of a confirmed defect, we will replace the item β a refund is issued only if a replacement can't be supplied (e.g. discontinued or out of stock). Transit damage or a wrong item received must be reported within 3 days of delivery.
If the product shows signs of misuse, tampering, physical damage, static discharge, liquid or fire damage, use of unapproved chemicals, or has been soldered or physically altered in any way.
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Probots sells every Electronics Part for your next Project. You can order 10,000+ Electronic Parts Online - Arduino, Raspberry Pi, NodeMCU Development Boards, Sensors, Motors, Motor Drivers, SMPS, Plastic Enclosures etc in India directly on probots.co.in
We offer specialized services for Bulk, Wholesale & B2B Customers like discounted prices, additional shipping options, customised products, etc . Customer with large quantity & regular orders qualify for the specialised discounted rates.
We also offer dedicated sales team to assist you with the order process by providing sales quotations, PI, technical support for choosing products, etc.
Note: Business Orders are processed manually and usually take 1-3 days to process compared to placing the order directly on our website. Please plan your purchases accordingly.
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Probots Electronics is highly regarded for its highly skilled team and knowledgeable staff who provide expert guidance to ensure customers select the right components for their technical projects. The business maintains a strong reputation for prompt service and reliable support, with many clients praising their quick response times and genuine commitment to customer satisfaction.
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