Rs232 Modem Sms

Alibaba.com

Overview

Product sourcing insights & recommendations

26 来源

The RS232 SMS modem market is undergoing a significant transformation, driven by the global 2G/3G network sunset and a strategic shift toward Industrial IoT (IIoT) Alibaba. While consumer use has vanished, these devices are seeing a resurgence in high-security industrial sectors due to their ability to provide local data sovereignty and SIM-level diagnostics that cloud APIs cannot match Alibaba.

Market Trends & Insights (2024–2026)

* Technological Migration: 4G LTE Cat 1 and Cat 4 have become the industry standard, replacing legacy 2G hardware AlibabaAlibaba. For future-proofing, 5G RedCap (Reduced Capacity) is emerging as a cost-effective alternative for long-lifecycle industrial infrastructure Alibaba.

* Operational Resilience: Organizations are increasingly using hardware-based SMS modems as an "Out-of-Band" management tool. This allows engineers to reboot systems via SMS AT commands even if the primary IP network fails Robustel.

* Market Growth: The cellular modem sector is projected to reach $16 billion by 2032, with a 12.5% CAGR, fueled by demand in smart cities, utility metering (SCADA), and fintech OTP delivery Alibaba.

Key Product Categories & Features

* Industrial DTUs (Data Transfer Units): High-reliability modems like the G786-G support transparent RS232/RS485 to 4G transmission, specifically designed for harsh environments (-35°C to +75°C) AlibabaAlibaba.

* Bulk SMS Gateways: For high-volume transactional messaging (OTPs, logistics alerts), businesses utilize multi-port 4G LTE hardware to maintain carrier independence and bypass third-party throttling AlibabaAlibaba.

* Edge Computing Integration: Modern modems are evolving into Edge Gateways, pre-processing sensor data locally using embedded Linux systems before sending critical alerts via SMS AlibabaAlibaba.

Based on these findings, you might want to:

Industrial Cellular Modem Rs232 Rs485 Sms Alerts

Products · 5 lists

G786-G LTE Cat 4 Industrial DTU 150 Mbps Downlink RS232 RS485 to 4G Modem Modbus TCP SMS Transparent CE RoHS for SCADA

G786-G LTE Cat 4 Industrial DTU 150 Mbps Downlink RS232 RS485 to 4G Modem Modbus TCP SMS Transparent CE RoHS for SCADA

$60-704.7(298)
MOQ: 20 pieces
RS232 interfaceRS485 interfaceSMS alerts
Jinan Huayng Automation Technology Co., Ltd.Jinan Huayng Automation Technology Co., Ltd.verified🇨🇳CN2 yrs
USR-G786-G Global Frequency Industrial M2M Serial RS485 4G LTE GSM Modem External Wireless

USR-G786-G Global Frequency Industrial M2M Serial RS485 4G LTE GSM Modem External Wireless

$774.9(298)
MOQ: 1 piece
RS232 interfaceRS485 interfaceSMS alerts
Jinan USR IOT Technology LimitedJinan USR IOT Technology Limitedverified🇨🇳CN14 yrs
Industrial Cellular UMTS Modem Rs232 Rs485 for SCADA PLC, Datalogger, Alarm

Industrial Cellular UMTS Modem Rs232 Rs485 for SCADA PLC, Datalogger, Alarm

$110-2605.0(547)
MOQ: 1 set
RS232 interfaceRS485 interfaceSMS alerts≤1h response time
Xiamen Bivocom Technologies Co., Ltd.Xiamen Bivocom Technologies Co., Ltd.🇨🇳CN10 yrs
G786-EUX 4G M2M Cellular Modems Support Transmission  RS232/RS485 and 4G Network Europe/Middle East/Africa/Korea/Thailand

G786-EUX 4G M2M Cellular Modems Support Transmission RS232/RS485 and 4G Network Europe/Middle East/Africa/Korea/Thailand

$109.50-118.504.9(957)
MOQ: 1 piece
RS232 interfaceRS485 interfaceSMS alerts100+ store reviews13% reorder rate≤2h response time
Shenzhen Xinliwei Electronics Technology Co., LtdShenzhen Xinliwei Electronics Technology Co., Ltd🇨🇳CN6 yrs
USR-G771-E Europe External Wireless LTE CAT 1 4G GSM RS232 RS485 MQTT SMS Serial Cellular Modem Sim Card Slot in Stock

USR-G771-E Europe External Wireless LTE CAT 1 4G GSM RS232 RS485 MQTT SMS Serial Cellular Modem Sim Card Slot in Stock

$19-234.4(791)
MOQ: 1 piece
RS232 interfaceRS485 interfaceSMS alerts100+ store reviews4% reorder rate≤12h response time
Shenzhen Qianbao Technology Co., Ltd.Shenzhen Qianbao Technology Co., Ltd.🇨🇳CN4 yrs
USR-DR504-AUX Din-Rail Modbus RTU to Modbus TCP Modem 4G LTE RS485 to Cellular 4G Modem Supports TCP Server TCP Client

USR-DR504-AUX Din-Rail Modbus RTU to Modbus TCP Modem 4G LTE RS485 to Cellular 4G Modem Supports TCP Server TCP Client

$76.634.8(285)
MOQ: 1 piece
RS232 interfaceRS485 interfaceSMS alerts11% reorder rate≤7h response time
Shenzhen Guocanshengye Technology Co., Ltd.Shenzhen Guocanshengye Technology Co., Ltd.🇨🇳CN1 yr
RS232/RS485/USB 3g Modem SIM5320 Hsdpa Gsm Data Logger Input Output Modem

RS232/RS485/USB 3g Modem SIM5320 Hsdpa Gsm Data Logger Input Output Modem

$30-355.0(745)
MOQ: 1 set
RS232 interfaceRS485 interfaceSMS alerts50+ store reviews14% reorder rate≤3h response time
Shenzhen Yun Da Tong Technology Co., Ltd.Shenzhen Yun Da Tong Technology Co., Ltd.🇨🇳CN10 yrs
Hot Sale 3g 4g Rs232 Lte Modem With Sim Card NB-IOT/CAT-M/CAT4/CAT1 SlM7600G-H Module M2m Industrial Gsm Modem

Hot Sale 3g 4g Rs232 Lte Modem With Sim Card NB-IOT/CAT-M/CAT4/CAT1 SlM7600G-H Module M2m Industrial Gsm Modem

$26-454.5(477)
MOQ: 1 piece
RS232 interfaceRS485 interfaceSMS alerts50+ store reviews≤4h response time
Shenzhen Bailingjia Technology Co., Ltd.Shenzhen Bailingjia Technology Co., Ltd.🇨🇳CN14 yrs
M240 V4 Industrial Cellular IP  4G Wireless IoT GSM  Modem SCADA  with Sim Card Slot

M240 V4 Industrial Cellular IP 4G Wireless IoT GSM Modem SCADA with Sim Card Slot

$55-1094.8(695)
MOQ: 1 piece
RS232 interfaceRS485 interface200+ store reviews10% reorder rate≤2h response time
Xiamen Yifan Communication Technology Co., Ltd.Xiamen Yifan Communication Technology Co., Ltd.verified🇨🇳CN17 yrs
Industrial 4G Modbus Modem I/O Module Controller Rtu for Water Pump control S475

Industrial 4G Modbus Modem I/O Module Controller Rtu for Water Pump control S475

$167.50-207.604.7(608)
MOQ: 1 piece
RS485 interfaceSMS alerts100+ store reviews14% reorder rate≤5h response time
Shenzhen Beilai Technology Co., Ltd.Shenzhen Beilai Technology Co., Ltd.🇨🇳CN4 yrs
E840-DTU(4G-02)E Industrial Grade Wireless Networking Modem Equipment Modbus RS485 GPRS 3G 4G LTE Modem for M2M

E840-DTU(4G-02)E Industrial Grade Wireless Networking Modem Equipment Modbus RS485 GPRS 3G 4G LTE Modem for M2M

$49.254.9(822)
MOQ: 2 pieces
RS232 interfaceRS485 interface1000+ store reviews14% reorder rate≤2h response time
Chengdu Ebyte Electronic Technology Co., Ltd.Chengdu Ebyte Electronic Technology Co., Ltd.🇨🇳CN11 yrs
Four-Faith Industrial RS-232 Modbus RS-485 M-bus Converter 3G M2M WCDMA/HSDPA/HSUPA Modems 1024Kbps External

Four-Faith Industrial RS-232 Modbus RS-485 M-bus Converter 3G M2M WCDMA/HSDPA/HSUPA Modems 1024Kbps External

$39-3995.0(975)
MOQ: 100 units
RS232 interfaceRS485 interface≤4h response time
Xiamen Four-Faith Communication Technology Co., Ltd.Xiamen Four-Faith Communication Technology Co., Ltd.🇨🇳CN16 yrs
RS485 4G LTE CAT4 Industrial Wireless Modem M2m Quectel EC21 EC25 Module 4g Modem

RS485 4G LTE CAT4 Industrial Wireless Modem M2m Quectel EC21 EC25 Module 4g Modem

$39-754.4(956)
MOQ: 1 piece
RS485 interfaceSMS alerts300+ store reviews8% reorder rate≤2h response time
Shenzhen Bailingjia Technology Co., Ltd.Shenzhen Bailingjia Technology Co., Ltd.🇨🇳CN17 yrs
USR-G805 4G Modem RS232 RS485 Serial to 4G Network Support FDD-LTE TD-LTE

USR-G805 4G Modem RS232 RS485 Serial to 4G Network Support FDD-LTE TD-LTE

$1004.3(990)
MOQ: 5 pieces
RS232 interfaceRS485 interface50+ store reviews19% reorder rate≤2h response time
Henan Dongchuan Electrical Equipment Co., LtdHenan Dongchuan Electrical Equipment Co., Ltd🇨🇳CN6 yrs
RS232 RS485 To GSM GPRS DTU Modem Converter Industrial Cellular Modem Serial Port USR-GPRS232-730

RS232 RS485 To GSM GPRS DTU Modem Converter Industrial Cellular Modem Serial Port USR-GPRS232-730

$25-275.0(316)
MOQ: 1 piece
RS232 interfaceRS485 interface50+ store reviews14% reorder rate≤10h response time
Hunan Teng Xin Technology Co., Ltd.Hunan Teng Xin Technology Co., Ltd.🇨🇳CN5 yrs
AISmartlink  USR-DR504 RS485 Industrial Cellular Modems

AISmartlink USR-DR504 RS485 Industrial Cellular Modems

$73.15-774.7(859)
MOQ: 2 pieces
RS232 interfaceRS485 interface
WuHan Aismartlink Intelligent Technology Co., Ltd.WuHan Aismartlink Intelligent Technology Co., Ltd.verified🇨🇳CN9 yrs
RS485 GPRS Modem for IoT Wireless Monitoring MQTT Protocol for Parking Sensor Cellular

RS485 GPRS Modem for IoT Wireless Monitoring MQTT Protocol for Parking Sensor Cellular

$43-464.8(50)
MOQ: 1 piece
RS232 interfaceRS485 interface200+ store reviews27% reorder rate≤3h response time
Chengdu Zongheng Intelligence Control Technology Co., Ltd.Chengdu Zongheng Intelligence Control Technology Co., Ltd.🇨🇳CN7 yrs
Wide Voltage Design Wireless 4G Lte Router 300Mbps 2.4G Industrial 4g Router With Sim  Card Slot Rs485/rs232 4g Wireless Modem

Wide Voltage Design Wireless 4G Lte Router 300Mbps 2.4G Industrial 4g Router With Sim Card Slot Rs485/rs232 4g Wireless Modem

$53.504.6(443)
MOQ: 2 pieces
RS232 interfaceRS485 interface
Shenzhen Weizhi Internet Technology Co., Ltd.Shenzhen Weizhi Internet Technology Co., Ltd.verified🇨🇳CN4 yrs
Industrial-Grade 4G/5G Cellular Wireless IoT-Gateway DTU RS232/RS485 Serial Interfaces MQTT Communication Transparent Data

Industrial-Grade 4G/5G Cellular Wireless IoT-Gateway DTU RS232/RS485 Serial Interfaces MQTT Communication Transparent Data

$61.50-284.603.8(125)
MOQ: 1 piece
RS232 interfaceRS485 interface≤1h response time
Sichuan Cloudlink Digital Intelligence Technology Co., Ltd.Sichuan Cloudlink Digital Intelligence Technology Co., Ltd.🇨🇳CN1 yr
SERIALLINK SLK-M200-LTE 4G LTE Modem Supported with Command for SMS Communication & Networking Product

SERIALLINK SLK-M200-LTE 4G LTE Modem Supported with Command for SMS Communication & Networking Product

$55-604.6(599)
MOQ: 1 piece
RS232 interfaceRS485 interfaceSMS alerts≤4h response time
Shenzhen Shi Fang Communication Technology Co., Ltd.Shenzhen Shi Fang Communication Technology Co., Ltd.🇨🇳CN13 yrs
USR-DR504 RS485 Industrial Cellular Modems

USR-DR504 RS485 Industrial Cellular Modems

$72.42-76.234.7(977)
MOQ: 2 pieces
RS485 interface14% reorder rate≤1h response time
Shenzhen Nordson Electronics Co., Ltd.Shenzhen Nordson Electronics Co., Ltd.🇨🇳CN1 yr
USR-DR504 RS485 Industrial Cellular Modems

USR-DR504 RS485 Industrial Cellular Modems

$72.42-76.234.7(452)
MOQ: 2 pieces
RS485 interface50+ store reviews12% reorder rate≤3h response time
Shenzhen Shengdingtong Technology Co., Ltd.Shenzhen Shengdingtong Technology Co., Ltd.verified🇨🇳CN1 yr
PLC Moxa G3150A-LTE OnCell Cellular Ethernet Modem 3093024000015 *NEW* Bulk Supply

PLC Moxa G3150A-LTE OnCell Cellular Ethernet Modem 3093024000015 *NEW* Bulk Supply

$58-4964.8(496)
MOQ: 1 piece
RS485 interface14% reorder rate≤2h response time
Xiamen Shengjingda Technology Co., Ltd.Xiamen Shengjingda Technology Co., Ltd.🇨🇳CN1 yr
Industrial Wireless Cellular Modem Serial Modem for RS485 to 4G Conversion Network Data Communication Networking

Industrial Wireless Cellular Modem Serial Modem for RS485 to 4G Conversion Network Data Communication Networking

$45-604.9(911)
MOQ: 1 piece
RS485 interface≤8h response time
Ivy Metering Co., Ltd.Ivy Metering Co., Ltd.🇨🇳CN10 yrs
PLS8 Cinterion 4G LTE GSM Modem Wireless RS232 GSM Modem

PLS8 Cinterion 4G LTE GSM Modem Wireless RS232 GSM Modem

$22-785.0(267)
MOQ: 1 unit
RS232 interfaceSMS alerts≤2h response time
Shenzhen FML Trade Co., Ltd.Shenzhen FML Trade Co., Ltd.🇨🇳CN5 yrs
Vitalwell VW3301 IoT 4G LTE IP Long Range Wireless Modem with RS485 Interface Cloud Data Exchange for Communication & Networking

Vitalwell VW3301 IoT 4G LTE IP Long Range Wireless Modem with RS485 Interface Cloud Data Exchange for Communication & Networking

$45-754.0(778)
MOQ: 2 pieces
RS485 interface≤7h response time
Vitalwell Electronics (Zhuhai) Pte., Ltd.Vitalwell Electronics (Zhuhai) Pte., Ltd.🇨🇳CN14 yrs
GSM-4GLTEGPS BOM 4G LTE GSM MODEM WITH GPS, RS232 GSM-4GLTEGPS

GSM-4GLTEGPS BOM 4G LTE GSM MODEM WITH GPS, RS232 GSM-4GLTEGPS

$36-197.985.0(204)
MOQ: 10 pieces
RS232 interfaceSMS alerts25% reorder rate≤7h response time
Shenzhen Longgang Ruru Trading FirmShenzhen Longgang Ruru Trading Firm🇨🇳CN3 yrs
TRM250 Industrial Cellular Modem External USB Wireless Interface LTE Antenna 4G Network LT Origin

TRM250 Industrial Cellular Modem External USB Wireless Interface LTE Antenna 4G Network LT Origin

$56.18-57.314.3(591)
MOQ: 1 piece
≤12h response time
Safety Solutions Poland Dawid KrawiecSafety Solutions Poland Dawid KrawiecPL5 yrs
New And Original GSM-4GLTEGPS 4G LTE GSM MODEM WITH GPS, RS232 RF and Wireless/RF Receiver, Transmitter, and Transceiver

New And Original GSM-4GLTEGPS 4G LTE GSM MODEM WITH GPS, RS232 RF and Wireless/RF Receiver, Transmitter, and Transceiver

$137.73-229.554.9(207)
MOQ: 1 piece
RS232 interface200+ store reviews21% reorder rate≤2h response time
Shenzhen Kaisheng Century Electronics Co., Ltd.Shenzhen Kaisheng Century Electronics Co., Ltd.verified🇨🇳CN3 yrs
RS232 SMS Modem Buying Guide for Industrial IoT (2024–2026)