
Shipping Estimate
USA
- USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 8 - Jul 13
For Your Every Summer RSVP, with Code: SUMMER15
Description
Waveshare RS232 RS485 To RJ45 Ethernet Serial Server, 25108, 25391Features: 1. A dual serial port device data collector IoT gateway designed for industrial environments. One RS232 and one RS485 can work simultaneously using one network cable without interfering with each other. 2. It integrates multiple functions, including serial port server, Modbus gateway, MQTT gateway, RS232 and RS485 to JSON, etc. 3. The other Ethernet port can be used as a network switch or cascade, and the PoE function can be equipped with
Features:
1. A dual serial port device data collector/IoT gateway designed for industrial environments. One RS232 and one RS485 can work simultaneously using one network cable without interfering with each other.
2. It integrates multiple functions, including serial port server, Modbus gateway, MQTT gateway, RS232 and RS485 to JSON, etc.
3. The other Ethernet port can be used as a network switch or cascade, and the PoE function can be equipped with dual power supply.
4. The Ethernet port provides two power supply methods: DC port (outer diameter 5.5mm, inner diameter 2.1mm) and screw terminal.
5. The chassis adopts guide rail support, which is small in size, easy to install and cost-effective. 6. Suitable for data collection, IoT gateway, security IoT, smart instrument monitoring and other applications.
7. This product is a PoE receiving device (PD) and needs to be connected to a PoE power supply and obtain power from the PSE device to work properly.
Product parameters:
1. Product type: serial server, Modbus gateway, MQTT gateway
2. Basic functions: two-way transparent transmission of data between RS232, RS485 and Ethernet
3. Communication interface: RS232 port × 1, RS485 port × 1, Ethernet port × 2
4. Power supply:
TO ETH (B): DC 5.5 power interface, 6~45V DC screw terminal
TO POE ETH (B): DC 5.5 power interface, 6~45V DC screw terminal, or PoE interface
5. Isolation protection: power isolation, signal isolation
6. Ethernet:
TO ETH (B):RJ45
TO POE ETH (B): RJ45 with PoE support, IEEE 802.3af compliant
10/100M self-negotiating RJ45 connector, 2KV surge protection
7. Serial port: Isolated RS232 and RS485 (2 channels can receive and send independently at the same time)
8. Baud rate: 300-115200 bps
9. Check digit: none, odd, even, mark, space
10. Data bits: 5-9 bits
11. Flow control: Not applicable
12. Protocol: Ethernet, IP, TCP, UDP, HTTP, ARP, ICMP, DHCP, DNS
13. Configuration: host, browser, device management function library
14. Communication method: TCP/IP direct communication, VCOM
15. Working mode: TCP server, TCP client (coexisting with TCP server), UDP, UDP multicast
16. Working temperature: minus 40 degrees Celsius - 85 degrees Celsius
17. Humidity range: 5%-95% relative humidity
18. Product size: 78 x 72.5 x 24.2mm
19. Weight: 134 grams
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
- If time is of the essence, please consider selecting expedited delivery for faster service.
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
4.6 ★★★★★
Based on 2201 reviews
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Product Reviews
★★★★★ 1
Burns if leaches into eyes.
Size: 0.5 Fl Oz (Pack of 1)
Do not get this product in your eyes! It really burns. Sometimes it will leach into eye and then the pain begins. I have used other eye rollers without any discomfort if accidentally goes into eyes . Please be careful. I will never order this again.
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Reviewed in the United States on April 29, 2026
★★★★★ 5
Reduces Eye Bags, for men and women
Size: 0.5 Fl Oz (Pack of 1)
I've tried a bunch of gels, creams and extracts to help reduce the eye bags which grew larger as I aged. Now at 70 years, I thought maybe my skin wasn't able to improve any more. After seeing a caffeine based cream to reduce fat on other area of the body, I would apply coffee grounds powder under my eyes and thought I did notice a difference. When I saw this roller containing caffeine I decided to try for it's ease of use. I immediately noticed a distinct difference! While the bags did not disappear altogether, they were reduced enough that I didn't wonder if they were smaller, I could see they were. I think this is marketed to men so the packaging is plain not girly and it's unscented. I don't care as long as it works. It also has a metal roller ball as applicator which is cold on the skin without having to refrigerate it. I researched the list of ingredients, all of which are deemed to be safe. Some may be irritating if you have sensitive skin, but they are not toxic if applied topically ( but can be, if taken internally or used in high doses, so don't eat it or bathe in it and you'll be ok.) I have best results when I use it morning and night but it still makes a difference if I just use in the morning. I also blend a concealer only on the shadow part of the eye bag and it disappears even more. Very reasonably priced for a safe and effective cosmetic product in a market of hype and over-priced products. Recommended.
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Reviewed in the United States on November 6, 2024
★★★★★ 5
Works
Size: 0.5 Fl Oz (Pack of 1)
It worked okay for me.
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Reviewed in the United States on April 24, 2026
★★★★★ 5
Refreshing and effective
The Dewyhour Eye Balm Cool Stick is a game changer for my under-eye routine! It instantly hydrates and cools, reducing puffiness and dark circles. I love how it feels refreshing on my skin and absorbs quickly. After using it regularly, I’ve noticed a reduction in fine lines too. This balm is now a staple in my skincare routine! Highly recommend for anyone looking to brighten and rejuvenate their eye area.
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Reviewed in the United States on October 1, 2024
★★★★★ 5
nice
This is a lot like the Icelandic one. It's very nice and has a cooling effect.
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Reviewed in the United States on February 22, 2026