Description
The STE2 PLUS SMS-GW bundle is designed for professional remote monitoring of temperature, humidity, CO2, VOC, and other environmental factors. The STE2 PLUS unit supports up to 15 sensor values connected via 2 RJ11 ports and provides LAN & WiFi connectivity for easy deployment.
The SMS-GW3 LTE gateway enables SMS and voice call alerts for the STE2 PLUS and other HWg devices on the same LAN. This eliminates the need for external software or cloud-based services, ensuring fast and reliable alarm notifications even in offline environments.
Ideal for server rooms, data centres, food storage, pharmaceutical storage, and HVAC monitoring, this bundle ensures real-time alerts and seamless integration with SNMP-based software like Nagios.
Key Features
- Includes:
- STE2 PLUS LAN & WiFi thermometer
- SMS-GW3 LTE gateway with external antenna
- Temperature sensor (IP67, 3m)
- 2x international power adapters (EU, UK, US)
- Up to 15 sensor values (temperature, humidity, CO2, VOC, etc.)
- Supports LAN, WiFi, PoE power options
- SNMP v3, HTTPS, XML API, IPv6 support
- Standalone operation (no portal required)
- Single SMS gateway for multiple HWg devices
- SMS & voice call alerts without third-party services
- Integration with SNMP monitoring software (Nagios, SensDesk, etc.)
Technical Specifications
| Feature | Description |
|---|---|
| Connectivity | LAN (RJ45), WiFi (802.11bgn), PoE |
| Sensor Ports | 2x RJ11 (supports up to 15 sensor values) |
| Supported Protocols | SNMP v1/v3, HTTPS, XML, HWg-Push |
| Alarming & Notifications | Email, SNMP Trap, SMS, Voice Call |
| Mobile Monitoring | HWg Monitor App (Android/iOS) |
| Power Supply | 5V & 9-30V (PoE supported) |
| Power Consumption | 300mA (STE2 PLUS), 250mA (SMS-GW3 LTE) |
| Operating Temperature | -10°C to 60°C |
| Storage Temperature | -30°C to 60°C |
| Humidity Range | 0% to 95% RH |
| Dimensions | 98 × 68 × 33 mm (STE2 PLUS), varies for SMS-GW3 LTE |
| Housing & IP Rating | Plastic, IP40 |
| Warranty | 24 months |
Applications and Usage
- Server Room Monitoring (Detect AC failure, prevent overheating)
- Pharmaceutical & Medical Storage (Temperature compliance monitoring)
- Food Storage & HACCP Compliance (Monitor refrigerators and freezers)
- Warehouse & Smart Home Monitoring (Humidity, CO2, VOC detection)
- HVAC System Optimisation (Heating & cooling efficiency monitoring)
- Remote Equipment Alerting (SMS & Call alerts for critical failures)






















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