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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:
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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
4.8 ★★★★★
Based on 7 reviews
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Product Reviews
★★★★★ 5
It’s just as described. I love it. Very pretty and lots of space.
Size: Medium (6.8"W*4.4"D*2.2"H), Color: Beige
The quality of it was great. It’s very pretty and easy to travel with. Love the removable eaaring holder. Gives enough room for everything
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Reviewed in the United States on April 27, 2026
★★★★★ 5
Great value, great product!
I use this as a home jewelry box - I don't wear a lot of jewelry, so it fits my needs perfectly. Its pretty lightweight and would be good for travels as well. The outside is leather-like and seems to be waterproof so far. I use the first layer for jewelery and second layer to store my hairclips and pins. I've had it for a few months and it seems to be great quality and durable! Definitely a good value as well because I've seen similar jewelry boxes sold at popular retail stores for over $30.
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Reviewed in the United States on January 21, 2026
★★★★★ 5
Lovely Slate Gray Jewelry Box
I just received this Slate Gray jewelry box. It's really quite lovely and just the right size for my granddaughter's vanity. I'm really excited about giving it to her, for her 12th Birthday, to hold her better jewelry. It's so nice I'm going to order another one for my other Granddaughter's Birthday.
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Reviewed in the United States on December 5, 2025
★★★★★ 5
Songmics Slate Gray Travel Jewelry Box
I purchased the slate gray Songmics jewelry box for travel purposes. We take long vacations and have an upcoming 20 day cruise. I wanted a jewelry box that was compact enough to put in my carry-on bag, but still had room to hold a months worth of jewelry, especially to keep my necklaces for tangling. When this arrived, I was pleasantly surprised and the packaging was great, shipped in a sturdy box. so no damage to the jewelry box. The color is a rich gray and the 2 tier box, while small, holds a lot of jewelry. I wanted to purchase the ink black but could not justify paying twice the price of the gray one just to get it in black. It is small enough that it will fit in most any hotel/ship safe so I won't be sitting out in the room anyway. It has a strong magnetic snap that keeps the box from opening while in transit. The one negative for me is that the pierced earring card is so thick that my earrings barely go through to have enough room on the back side the slip the backs on. I may separate the double thick card, realizing it will not look as nice but will be more functional. The bottom half of the box will hold bracelets up to 1 1/4" wide. There is enough room under the earrings card to place pendants, additional earrings, etc. The necklace holder is designed to hold 5 necklaces, but I added one more by going across the top, end to end, to prevent tangling. I also placed smaller hoop earrings in the ring holder which holds them securely. This box held 7 bracelets, 2 of which were wide, 5 rings, 9 necklaces (I placed 3 in the bottom of the box, and had room for 23 pair of earrings (some placed in the ring holder and in the bottom of the bo)! I would buy this again in a heartbeat.
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Reviewed in the United States on April 10, 2025
★★★★★ 4
Nice jewelry box
The jewelry box is nicer than expected! Just wish it was a little bigger, but ok for traveling.
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Reviewed in the United States on June 20, 2025