RS485/UART to NB-IoT or LTE CAT-M Converter Sensor Node

RS485/UART to NB-IoT or LTE CAT-M Converter Sensor Node

Marsoni

M251S

$139.00

Get it in 3 business days with 1 day shipping. Friday, May 29

RS485/UART to NB-IoT or LTE CAT-M Converter Sensor NodeRS485 UART to NB IoT or LTE CAT M Converter Sensor Node The Dragino RS485 NB or RS485 CB is an RS485 UART to NB IoT or LTE CAT M Converter for Internet of Things solutions. User can connect the RS485 or UART sensor to the RS485 NB converter, and configure RS485 NB to periodically read sensor data and upload via NB IoT or LTE CAT M network to IoT server. RS485 NB can interface to the RS485 sensor, 3. 3v 5v UART sensor, or interrupt sensor. RS485 NB

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These were great for about 20 minutes then they stopped squeaking...we have 2 left that I have saved but the other 4 do not squeak anymore...disappointed as my dog loves to squeak things...would not buy these again...My dog is only an 8lb dog too...but he can still play with the balls without the squeak...

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Reviewed in the United States on April 26, 2026

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joymom

Carnegie, US

★★★★★ 5

Great Value for a ball my dog loves!

Color: S6-muti-color

I wish these ball were in the subscription program! My dog gets sooo excited by the new ball, but her interest in things lasts for a few days. She kills the squeak within 11minutes, but the squeaker stays in place rather than becoming a chocking or swallow hazard, and she still loves to chew it. Next, we must throw the ball approximately 723 times the first day, possibly 496 times on day 2, and just 3- 4 on day 3, at which point she will chase the ball before hollering "it's over here if you need it," while she checks on the chipmunk den. We currently have 17 of these balls in our yard (because we have given several leftovers to a less discriminating doodle next door). These balls hold up really well, get her extremely active for the first couple of days, and are a much cheaper than doggie daycare (after an active morning with a new ball, she is happy to chew on it and sleep much of the day). I always have these on hand!

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Reviewed in the United States on November 22, 2025

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Michelle

Lowell, US

★★★★★ 4

Pieces chewed off

Color: white & green

My Aussiedoodle loves it. I throw it down the hallway, it bounces crazy, and he chases it. The only complaint is that he can't chew much of the ball part. So now I have to have it put away and brought out for special playtime.

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Reviewed in the United States on April 9, 2026

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Ladybug27

Grantham, US

★★★★★ 5

Best Balls Ever!!!

Size: Medium

These are the best balls ever! We have 2 very active ball loving dogs and these bounce very well and they actually hold up with active play and chewing. They still look brand new after daily use for months!

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Reviewed in the United States on May 15, 2026