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Description
Industrial Control Board Communication Device Supports WiFi / Bluetooth Built-In Multiple Protection Circuits, 321541. Microcontroller: ESP32 S3 (default is ESP32 S3R8 chip) 2. Wireless communication: 2. 4GHz Wi Fi (802. 11 b g n), Bluetooth 5 (LE) 3. USB interface: Interface type: Type C Power supply voltage: 5V Functions: power supply for the device, USB communication, firmware download, etc. 4. Isolated RS485 communication interface: Interface type: terminal block Direction control: automatically controlled by the main control hardware flow setting Interface
1. Microcontroller: ESP32-S3 (default is ESP32-S3R8 chip)
2. Wireless communication: 2.4GHz Wi-Fi (802.11 b/g/n), Bluetooth 5 (LE)
3. USB interface:
- Interface type: Type-C
- Power supply voltage: 5V
- Functions: power supply for the device, USB communication, firmware download, etc.
4. Isolated RS485 communication interface:
- Interface type: terminal block
- Direction control: automatically controlled by the main control hardware flow setting
- Interface protection: provides TVS diode protection, surge and static protection
- Matching resistance: default NC, reserved 120R matching resistor, can be enabled by jumper cap
5. Isolated CAN communication interface:
- Interface type: terminal block
- Direction control: hardware automatically determines and controls the data transmission direction
- Interface protection: provides TVS diode protection, surge and static protection
- Matching resistance: default NC, reserved 120R matching resistor, can be enabled by jumper cap
6. Indicator lights:
- PWR: power indicator light, connected to USB, turns red when voltage is detected
- RS485: RS485 indicator light: Green when data is sent from the RS485 interface, blue when data is sent back from the RS485 interface
- CAN: CAN indicator light, flashes when data communication exists at the CAN interface
7. Terminal power supply range: 7V - 36V
8. Shell: rail-mounted protective shell
9. Size: about 9.16 x 2.33 x 5.87cm
Feature:
1. Based on the ESP32-S3 single-chip microcontroller, it is equipped with an Xtensa 32-bit LX7 dual-core processor with a maximum clock frequency of 240MHz
2. It integrates 2.4GHz Wi-Fi and low-power Bluetooth 5 (LE) dual-mode wireless communication, featuring excellent radio performance
3. It has an isolated RS485 interface, facilitating the external expansion of various RS485 Modbus industrial expansion modules or sensors
4. It has an isolated CAN interface, facilitating the external expansion of various CAN devices
5. It has an edge connector interface, allowing for the connection of other devices
6. It has a USB Type-C interface, which can be used for power supply and download debugging, facilitating development use
7. It has an isolated wiring terminal power supply interface, supporting a wide voltage range of 7V - 36V, facilitating the use of industrial power supply ports
8. It has an RTC clock chip, supporting timing tasks
9. It has digital isolation to avoid external signal interference to the control chip
10. It has an integrated power isolation unit, which can provide stable isolated voltage, and the isolated end does not require additional power supply
11. It has RS485 receiver and transmitter indicator lights and CAN operation indicator lights, facilitating the perception of the devices operating status
Specification:
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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
4.2 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 5
Really Happy With These Pillows!
Color: Blue, Size: Queen(2 Pack)-20'*30'
**Review: Really Happy With These Pillows!**
I purchased these pillows and couldn’t be happier!
First – they’re cool on *both* sides—finally! I’m not sure why that’s so rare (probably to cut costs), but these actually have cooling material on both sides, and it works really well.
Second – the venting around the center helps keep them from getting hot at night. A nice touch that makes a difference for hot sleepers.
However, the third feature is the best: the filling. Like many adjustable pillows, you can add or remove the fill, and these come with a small extra bag. The base amount was just right for most people. I had to remove some for my wife but added a bit more to mine. The fill itself is excellent—soft but supportive. You sink into it, but don’t hit bottom.
These pillows also have a good weight to them, so they don’t feel cheap. They fluff up great and seem very well made. I followed the recommended dryer run when I first received them and had no odor issues at all.
Highly recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 25, 2025
★★★★★ 5
Awesome Pillows
Color: Blue, Size: King(2 Pack)-20'*36'
AWESOME, they actually stay cool!!! Extra foam to firm and great instructions how to remove foam and make softer. Fantastic product
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Reviewed in the United States on April 16, 2026
★★★★★ 4
Very fluffy and comfortable.
It only stays cool for a few minutes. It is a very comfortable pillow.
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Reviewed in the United States on December 13, 2025
★★★★★ 5
Double Sided Cooling Pillow
Color: Blue, Size: King(2 Pack)-20'*36'
I truly love these pillows. They are sent with extra filling so if their not firm enough you can add more and if their to firm you can remove some. You can make these pillows to your liking. They fluff right back up. Their comfortable and you really get your moneys worth. I love them.
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Reviewed in the United States on January 31, 2026
★★★★★ 5
Fantastic pillows
Color: Blue, Size: Standard(1 Pack)-20'*26'
Fantastic pillows----never get headaches like others
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Reviewed in the United States on April 29, 2026