Description
Reviews
| Brand | - |
| Category | Electronic Components Market / Relays |
| Origin | - |
| Model Number | DAM0404D |
| Channel Count | 4 Channels |
| Communication Protocols | RS485, Ethernet, WiFi, LoRa |
| Isolation Type | Serial Isolation |
| Input Voltage | DC 12V - 24V |
| Max Load Current | 10A per Channel |
| Mounting Style | DIN Rail or Panel Mount |
| Operating Temperature | -20°C to +70°C |
| Material | Flame-retardant ABS Plastic |
| Warranty Period | 2 Years |
Anonymous
Mar 30, 2026
Rating: 5/5
Reliable in harsh environments
We deployed these in a warehouse with significant electrical noise. The isolation feature works as advertised, and we haven't had a single dropout. The LoRa range is also impressive for large facilities.
Anonymous
Mar 28, 2026
Rating: 5/5
Perfect for industrial IoT projects
The DAM0404D module exceeded my expectations. Setting up the WiFi and LoRa connections was straightforward, and the serial isolation provides excellent protection for our main controller. Highly recommended for automation tasks.
Anonymous
Mar 28, 2026
Rating: 4/5
Great value for money
For the price, you get a lot of functionality. The build quality feels premium. It took me a little while to configure the Modbus registers, but once done, it runs flawlessly.
Anonymous
Mar 22, 2026
Rating: 5/5
Versatile connectivity options
I needed a module that could handle both RS485 and WiFi, and this fits the bill perfectly. The 4-channel capacity is enough for my lighting control system. Very stable over the last three months.
Anonymous
Mar 13, 2026
Rating: 5/5
Essential component for our SCADA system
Integration with our existing SCADA software was seamless. The ability to switch between Ethernet and wireless backups gives us the redundancy we need. Excellent product from Juying.
Anonymous
Mar 08, 2026
Rating: 4/5
Solid performance, minor documentation gaps
The hardware is robust and the relay switching is silent and reliable. I deducted one star because the initial setup guide for the Ethernet static IP could be more detailed. Otherwise, a great product.
Q: Does this module support MQTT protocol for cloud integration?
A: Yes, the DAM0404D supports MQTT over both WiFi and Ethernet connections, allowing easy integration with most major IoT cloud platforms.
Q: Is there a mobile app available for controlling the relays?
A: Juying provides a generic TCP/UDP debug tool and supports third-party apps via Modbus TCP. We do not have a branded proprietary mobile app at this time, but many customers use Node-RED or Home Assistant dashboards.
Q: Can the LoRa frequency be customized for different regions?
A: Absolutely. The LoRa frequency is configurable via the web interface or serial commands to match regional standards such as 868 MHz for Europe or 915 MHz for North America.
Q: What is the maximum wire gauge accepted by the terminal blocks?
A: The terminal blocks accommodate wires ranging from 24 AWG to 12 AWG (0.2 mm² to 2.5 mm²).
Q: How do I reset the device to factory settings if I lose the password?
A: You can perform a hard reset by holding the physical reset button on the PCB for 10 seconds while powering up the device. This will restore default IP and login credentials.
Maike Outdoor Sports Waterproof Backpack Wet-Dry Separation Ski Bag Fishing Creek Fins Multi-Function Gear Storage
$152.00
Viral NFC Chip Stickers for Music Wall - Adhesive Read/Write Tags for Song Scanning, Cards, and Photo Frames
$2.38
Rechargeable Generation 2 Personal Air Purifier - Safe Portable Electric Fan for Travel Commuting and Flights
$181.00
Integrated Sink Splash Guard with Silicone Drain Mat - Auto-Draining Countertop Organizer
$23.30
Ultra-Light Aluminum Camping Light Pole – Foldable Mini Lamp Stand for Outdoor Picnics and Tabletop Use
$8.33
bimoz Under-Desk Cable Organizer No-Drill Shelf for Home Office Socket Strip Router Wire Data Cable Fixer Minimalist Wire Winder Dual-Side Mount Ventilated Design
$40.80
Extended Deep-Cut External Thread Tool Holder with Relief Groove for Swiss-Type Lathe HKFF42R6001
$15.50
Meiao Dental Imported Dental Implant Package, Swiss ITI Straumann Implant Abutment, False Teeth, Filling, and Planting
$14,188.00
Assorted Colors Kids' Painting Crayons - Washable Oil Pastels in 12, 18, 24, or 36 Colors for Graffiti and Coloring
$2.47
Fruit and Vegetable Slicer - Stainless Steel Commercial Electric Multi-Function Shredder for Radish, Potato, Cucumber, Pepper, Automatic
$2,880.00
CAAS-Developed Granular Insecticide and Fungicide for Vegetable Gardens – Soil Pest Control and Fertilizer for Enhanced Vegetable Growth and Yield
$13.50
Marie's C6823 Sketch Blending Stumps (3-Pack), Professional Charcoal and Pastel Smudging Tools for Art Students and Beginners, Hard/Small/Highlight Set on Newsprint
$7.48
Inverted Water Dispenser Stand with Manual Pump for Large Mineral Water Bottles
$67.00
Lanzhai Flagship Store Multifunctional Retro Brush Washer Set, Creative Ceramic Large National Painting Tea Rinse Bowl, Art Display Paperweight, Student Calligraphy Supplies
$8.42
Multi-Function Vanity Shelf Over Toilet - Floor-Standing Thickened Plastic Storage Cabinet for Squat Toilet Gaps
$52.49
100% Cotton Watercolor Paper Pad 300gsm - Cold/Hot Press, 8K/16K/32K Sizes, Glued on Four Sides for Academy & Portable Sketching
$11.90
Commercial Large Shredding Machine Tornado Potato Slicer Wavy Slice Equipment Carrot Slicer Multi-Function
$20,000.00
Electric Heating Pasteurization Tank – Horizontal Spray Type for Fresh Milk and Food Sterilization
$11,211.00
![[First Batch Deposit] Spring Cherry & Pear Snow - Original Lolita Ballet-Style Cake Dress Chinese JSK](https://www.gosteppe.com/cache/small/product/269019/legacy-main-be5286e5316da63aa7d52258.webp)
[First Batch Deposit] Spring Cherry & Pear Snow - Original Lolita Ballet-Style Cake Dress Chinese JSK
$5.00
Bottled Water Electric Pump Bracket, Mineral and Pure Water Dispenser, Automatic Water Outlet Device
$383.98
Micro-Hyperbaric Oxygen Chamber - Rigid Sit/Lie Model for Home and Commercial Use, High-Altitude Oxygen Therapy Room
$150.00
Stainless Steel Illuminated Hotel Room Number Plate, Smart Electronic Door Sign with Do Not Disturb and Make Up Room Bell
$10.00
Paper Blending Stump A1zdq001 - Large Art Sketch Highlighting Tool for Students
$4.15
Continental Run-Flat Tires 225 235 245 255 265/45 50 55R17R18R19R20R21R22
$350.00
3D Printing Pen for Children - 3D Stereoscopic Drawing Toy for Boys and Girls (Ages 6+)
$35.70
MOOCAT Loose-Leaf Refill – 300G Wood Pulp Fine-Texture Blank Paper for OC Binders A9/B5/M5/M6 Hand Drawing
$12.90
Lanzhai Calligraphy Wool Felt Mat – Mini Arm Rest and Inkstone Pad with Creative Chinese Style Design for Painting and Writing
$7.48
Qing Dynasty Calligrapher Lin Zexu Guangeti Small Regular Script: Buddha Speaks of the Infinite Life Sutra, Brush Tracing Practice Long Scroll Copybook
$8.80
Lightweight Ceramsite Bottom Padding, Professional Backfill for Sunken Bathroom Engineering and Construction, Large Granules
$30.10
![[In Stock] MINISO YOYO Wind-Chasing Diary Series Aromatherapy Figure Blind Box – Youyou-chan Ornament](https://www.gosteppe.com/cache/small/product/269008/legacy-main-75745db0463ce5521fe5703d.webp)
[In Stock] MINISO YOYO Wind-Chasing Diary Series Aromatherapy Figure Blind Box – Youyou-chan Ornament
$49.00
