【Overview】

This product is an industrial RS485 interface controlled 16-channel relay module. It adopts the Modbus RTU protocol and features built-in power isolation, ADI optocoupler isolation, self-recovery fuse, and TVS protection circuitry. It is designed with an ABS rail-mounted enclosure. This product is easy to operate and has characteristics such as fast communication speed, stability, reliability, and safety, making it suitable for various industrial control devices or applications with high communication requirements.

[] Supports device address setting (1~255) for cascading multiple devices through the RS485 bus.

[] Equipped with flash-on and flash-off functions, allowing the relays to be operated for a specific duration automatically.

[] Integrated power isolation provides stable isolation voltage without the need for additional power supply.

[] Integrated ADI optocoupler isolation ensures signal isolation with high reliability, strong anti-interference capability, and low power consumption.

[] Built-in self-recovery fuse and TVS (Transient Voltage Suppression) effectively suppress surge voltage and transient spikes in the circuit, protecting against overcurrent, overvoltage, and lightning/static discharge.

[] Built-in optocoupler isolation avoids interference from high voltage circuits.

[] Utilizes a dedicated relay driver chip with built-in freewheeling diode protection, providing stronger and more stable driving capability.

[] Equipped with reverse connection protection circuit to prevent damage caused by reverse polarity.

[] Uses high-quality relays with permissible load: ≤10A 250V AC or ≤10A 30V DC.

[] Features a rail-mounted ABS protective enclosure for convenient installation and increased safety.

[] Includes 3 external LED indicators for monitoring MCU status and signal transmission/reception status.

【Features】

[] Operating Voltage: 5V

[] Communication Protocol: RS485

[] Communication Baud Rate: 4800, 9600, 19200, 38400, 57600, 115200, 128000, 256000

[] Default Communication Format: 9600, N, 8, 1

[] Number of Relays: 16

[] Contact Type: Normally Open (NO), Normally Closed (NC)

[] Communication Protocol: Standard Modbus RTU Protocol

[] RS485 Address Setting: 1~255

[] Indicators:

STA: MCU indicator, flashes when the MCU is working normally

TXD: Transmit indicator, lights up when transmitting data

RXD: Receive indicator, lights up when receiving

【On-board Multiple Isolation Protection Circuits】

[] Multiple layers of protection for enhanced safety and reliability.

【DIN Rail Mount Enclosure Design】

[] DIN rail mount ABS protective enclosure for easy installation and use, providing added safety with the enclosure.

【RS485 Communication】

[] Supports device address configuration (1~255) and allows for cascading multiple devices via the RS485 bus.

[] In cases where there are many cascaded devices or long communication distances, it is advisable to add RS485 repeaters according to the actual application environment.

The image is for illustrative purposes only. This product does not include a USB to RS485 converter. If you wish to purchase one, please [click here]

【Relay Wiring】

[] The device comes with a relay that has a contact capacity of 10A 250V AC or 10A 30V DC.

[] It can directly control household 220V AC devices, as well as control DC devices below 30V.

【Application Scenarios】

【Product Show】

【Outline Dimensions】

[] Modbus RTU Relay 16CH x1

[] US plug 5V 2A Power supply (with EU head adapter) x1

To：

Dear Customers, There may be a lag of several hours before we could process your order, depending on the time difference between your location and ours. Sincerely hoping your understanding!

Email(support)

services01@spotpear.com