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Description
Industrial 4-Ch DC Monitoring Module, 16-Bit High-Precision Acquisition, Supports Voltage And Current Measurement, Modbus RTU Protocol, 339311. Support setting of device address (1 255) to enable cascading of multiple devices via RS485 bus 2. Onboard voltage stabilizing chip, supporting a wide voltage range of 7V 36V 3. Onboard integrated power isolation, providing stable isolated voltage. The isolated terminals do not require additional power supply 4. Onboard optocoupler isolation, capable of signal isolation, with high reliability and strong anti interference 5. Onboard self recovery
1. Support setting of device address (1 - 255) to enable cascading of multiple devices via RS485 bus
2. Onboard voltage stabilizing chip, supporting a wide voltage range of 7V - 36V
3. Onboard integrated power isolation, providing stable isolated voltage. The isolated terminals do not require additional power supply
4. Onboard optocoupler isolation, capable of signal isolation, with high reliability and strong anti-interference
5. Onboard self-recovery fuse and TVS (Transient Voltage Suppression Diode), effectively suppressing surge voltages and transient peak voltages in the circuit, preventing overcurrent, overvoltage, lightning and static electricity
6. Onboard 0.002 ohm 1% sampling resistor, 16-bit high-precision acquisition, capable of measuring bidirectional current
7. The maximum measurement voltage is supported up to 36V, the maximum measurement current is supported up to 8A, and direct measurement of power is supported
8. Rail-mounted enclosure design, supporting stacking combination, easy installation, and safer to use
9. Three external LED indicators, facilitating viewing of MCU status and signal transmission/reception status
Parameters
1. Communication interface: RS485
2. Communication baud rate: 4800, 9600, 19200, 38400, 57600, 115200, 128000, 256000
3. Default communication format: 9600, N, 8, 1
4. Modbus protocol: standard Modbus RTU protocol
5. Power supply voltage: DC 7V - 36V
6. Sampling resistance: 0.002 ohm, 1%
7. Measurement range: voltage: 0 - 36V, current: ±8A
8. Resolution: 0.8mA
Packaging list:
- Modbus RTU DC Monitor x 1
- Power adapter x 1
- Screwdriver x 1
Specification:
| Package Weight |
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Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.0 ★★★★★
Based on 2461 reviews
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Product Reviews
★★★★★ 5
Inexpensive doesn’t mean cheap.
Color: Black/Orange
After 10 months, zero complaints. Well, I got rid of the horrible NATO strap 🙄. That’s a personal preference. Easy to swap out to whatever you like. Keeps accurate time meaning it’s the same time. I’m not micro analyzing it and the seconds gained/lost. It has a confident look and feel and makes you feel good when wearing it. Sure it’s not high priced but it’s not cheap. Very comfortable, light and not unincumbered. If this is what you’re looking at, you’d be satisfied. Great looking, durable and simple watch. Full confidence.
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Reviewed in the United States on October 25, 2025
★★★★★ 3
Budget Seiko Prospex this is not
Color: Black/Orange
Bought this as a cheap work watch, but I guess all the budget went into the solar technology.
No date adjust feature, gotta crank the crown over and over to adjust the date. (Also no screw-down crown, but that's expected at this price)
Fake diver bezel. Lol why? Cringe as heck. Should of just put a compass bezel on there instead tbh.
Cheap plastic crystal, scratches and mars just by looking at it.
Okay NATO strap. Falls apart quickly, but it's easily replaceable with a better quality one.
Decent lume on the hands, but none on the hour markers even though it looks like there is.
Looks cool.
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Reviewed in the United States on June 13, 2025
★★★★★ 5
Simplicity
Color: Black/Orange
This watch was received exactly as advertised. First off the watch is economical compared to other watches that advertise the same details. I will say that I have gone through numerous Luminox watches only to be disappointed. This watch fits the bill. It does have solar cells which mean it needs to be exposed to light to keep running, not a problem. Three minutes under my surefire light I am golden. The bezel doesn't rotate actually no big deal for me. I have always required that the bezel moves not anymore after having a bezel that rotates I use it next to never. Here's why, the more I rotate the bezel the more the numbers wear off. The strap on the watch with the catches for the strap are perfect. They actually hold the watch strap in place in lieu of like other big name brands that just flop and slide. As far as everyday use goes this watch is my go to. To be honest I have purchased three. This is the only watch I will wear moving forward, yeah the glass my scratch but even the big names like the Luminox I spoke of earlier scratches too.
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Reviewed in the United States on April 4, 2026
★★★★★ 5
Long time waiting. Finally go it!
Color: Black/White/Black
Love it. Perfect size. Quality is good!! Worth the money. Light is bright. Able to change strap
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Reviewed in the United States on May 11, 2026
★★★★★ 5
Durability 💪
Color: Black/White/Black
Good work watch. I put it in mud, water and gravel. Keeps on ticking 👍
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Reviewed in the United States on May 20, 2026