Description:
Waveshare Modbus RTU 16-Ch Relay Module is an industrial 16-ch relay module controlled via RS485 bus, adopts Modbus RTU protocol, built-in protection circuits such as power supply isolation, magnetical isolation, resettable fuse, and TVS diode, etc. It also comes with an ABS case.
The Modbus RTU 16-Ch Relay is very easy to use. Due to its fast communication, stability, reliability, and safety, it is an ideal choice for industrial control equipment’s and/or applications with high communication requirements.
Features:
- Configurable device address (1~255), multi devices can be cascaded on RS485 bus
- Features flash-on, flash-off function, by passing argument to the command, it is possible to turn on the relay for a while and then close it automatically
- Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal
- Onboard unibody magnetical isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption
- Onboard resettable fuse and TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, provides over-
- current/over-voltage proof, lightningproof & anti-electrostatic
- Onboard Optocoupler isolation, prevent the relay from being interfered by high-voltage circuit
- Onboard dedicated relay driver chip, with built-in freewheeling diode protection, the driving ability is stronger and more stable
- Reverse-proof circuit, prevent the circuit from being damaged accidentally by incorrect connection
- High quality relay, contact rating: ≤10A 250VAC/30VDC
- Rail-mounted ABS case, easy to install, safe to use
- 3 LEDs for indicating the MCU status and signal transceiving status
Specification:
| Item Type: | Relay Module |
|---|---|
| Contact Form: | 1NO 1NC |
| No. of Channels: | 16 |
| Communication Interface | RS485 |
| Operating Voltage (VDC): | 5V |
| Length (mm): | 200 |
| Width (mm): | 110.9 |
| Height (mm): | 59.1 |
| Weight (g): | 556 |
Package Includes:
1 x Modbus RTU Relay 16CH
1 x US plug 5V 2A Power supply (with EU head adapter)
Technical Specifications
| Brand | WAVESHARE |
|---|---|
| Interface / Protocol | RS485 |
| SKU | AI7599 |
| Weight | 0.84 kg |
| Availability | Out of Stock |
Shipping & Delivery
- Free shipping on orders above ₹999 across India
- Dispatched within 1-3 business days
- Expected delivery: 3-7 business days depending on location
- Secure packaging to ensure safe transit of electronic components
- Genuine WAVESHARE product sourced from authorized channels

Dhruv Mukherjee (verified owner) –
Love this Waveshare Modbus RTU 16-Ch Relay Module,. Click sound is satisfying and switching is instantaneous.
Prashant Joshi (verified owner) –
Outstanding quality! This Waveshare Modbus RTU 16-Ch Relay Module, has been running 24/7 for months without a single failure.
Advik Jain (verified owner) –
This Waveshare Modbus RTU 16-Ch Relay Module, works perfectly with my Arduino. Easy to wire and control.
Sandhya Vyas (verified owner) –
Perfect Waveshare Modbus RTU 16-Ch Relay Module, for my IoT project. Controlling appliances remotely works flawlessly.
Nandini Tandon (verified owner) –
Superb Waveshare Modbus RTU 16-Ch Relay Module,! Using it to control my garden irrigation system. Very dependable.
Ananya Pillai –
This Waveshare Modbus RTU 16-Ch Relay Module, works perfectly with my Arduino. Easy to wire and control.
Ishaan Shetty (verified owner) –
Love this Waveshare Modbus RTU 16-Ch Relay Module,. Click sound is satisfying and switching is instantaneous.
Kabir Goyal (verified owner) –
Nice Waveshare Modbus RTU 16-Ch Relay Module,. Relay clicks are clear. Terminal connections are solid.
Aditya Sen –
Great Waveshare Modbus RTU 16-Ch Relay Module,. Easy to integrate with NodeMCU for WiFi-based control.
Om Krishnan (verified owner) –
This Waveshare Modbus RTU 16-Ch Relay Module, works perfectly with my Arduino. Easy to wire and control.
Priya Bose –
Love this Waveshare Modbus RTU 16-Ch Relay Module,. Click sound is satisfying and switching is instantaneous.
Paras Gill (verified owner) –
This Waveshare Modbus RTU 16-Ch Relay Module, works perfectly with my Arduino. Easy to wire and control.
Riya Choudhury (verified owner) –
Great Waveshare Modbus RTU 16-Ch Relay Module,. Easy to integrate with NodeMCU for WiFi-based control.
Vishal Solanki –
Excellent Waveshare Modbus RTU 16-Ch Relay Module,! Switching is clean and reliable. Using it for home automation.
Rahul Khurana (verified owner) –
Great Waveshare Modbus RTU 16-Ch Relay Module,. Easy to integrate with NodeMCU for WiFi-based control.
Vaishali Srivastava –
This Waveshare Modbus RTU 16-Ch Relay Module, is robust and well built. PCB quality is excellent.
Om Gupta (verified owner) –
Superb Waveshare Modbus RTU 16-Ch Relay Module,! Using it to control my garden irrigation system. Very dependable.
Lalit Parekh –
Average Waveshare Modbus RTU 16-Ch Relay Module,. Works but the relay generates some EMI. Added snubber to fix.
Rohit Iyer (verified owner) –
Great Waveshare Modbus RTU 16-Ch Relay Module,. Easy to integrate with NodeMCU for WiFi-based control.
Himanshu Sharma –
Perfect Waveshare Modbus RTU 16-Ch Relay Module, for my IoT project. Controlling appliances remotely works flawlessly.
Yash Kapoor –
Very satisfied. My smart home system runs on these Waveshare Modbus RTU 16-Ch Relay Module, modules. Totally reliable.