Vertiv Liebert SN-TH Rack Temperature & Humidity Monitoring Sensor
The Vertiv Liebert SN-TH Modular Sensor is a professional-grade temperature and humidity monitoring solution designed specifically for data centers, server rooms, and network closets. Featuring two probes and a modular design with separate sensors and cables, this plug-and-play device monitors environmental conditions within racks to protect critical IT equipment from overheating and humidity-related damage. Compatible exclusively with Vertiv UPS systems, PDUs, and serial consoles, the SN-TH sensor provides real-time alerts when conditions exceed thresholds, helping you prevent costly downtime.
Key Features
-
Dual-Probe Design: Monitors both temperature and humidity with two separate probes for accurate environmental tracking
-
Modular Configuration: Custom string design allows you to configure sensors to meet your specific monitoring needs and scale as you grow
-
Exclusive Vertiv Compatibility: The only sensor that works with Vertiv rack-mount devices including UPS systems, PDUs, and Avocent serial consoles
-
Real-Time Alarm Notification: Immediate alerts when environmental conditions exceed set thresholds to protect critical equipment
-
Easy Installation: Tool-less mounting to Vertiv rack frames with all cables and mounting hardware included
-
Auto-Configuration: Plug-and-play setup saves time and money during installation and operation
Precision Environmental Monitoring
The SN-TH sensor delivers accurate temperature readings from 5°C to 55°C with ±0.5°C accuracy, and humidity monitoring from 10% to 95% RH (non-condensing) with ±3.5% RH accuracy. This precision helps you maintain optimal conditions for servers, network equipment, and other business-critical hardware. The sensor operates at altitudes up to 6,000 feet (2,000 meters), making it suitable for installations at various elevations.
Flexible Deployment for Rack Monitoring
Position the SN-TH sensor anywhere within your rack or network closet to monitor temperature and humidity at critical points. The modular design with separate 6.6-foot (2m) cables provides flexibility for custom configurations. Sensors can be daisy-chained together with a maximum string length of 65.6 feet, allowing comprehensive monitoring across multiple zones. The compact form factor (2 × 3/4 × 1-5/8 inches) fits easily into tight spaces without obstructing airflow.
Seamless Integration with Vertiv Infrastructure
Designed for seamless integration with Liebert MPX and MPH rack PDUs, Liebert RDU-S monitoring devices, and Liebert IS-UNITY DP Communications Cards. Easily integrates with existing monitoring systems including Vertiv Environet Alert and Liebert SiteScan for centralized environmental management. View temperature and humidity conditions remotely at one or multiple points for efficient thermal management.
Built for Business-Critical Continuity
Protect mission-critical IT equipment from environmental hazards in data centers, telecom facilities, server rooms, and network closets. The SN-TH sensor helps you comply with industry best practices for environmental monitoring while preventing equipment failure due to temperature or humidity extremes. Part of the comprehensive Liebert SN sensor family, it can be combined with other modular sensors for temperature-only monitoring (SN-T), door switches (SN-2D), digital inputs (SN-3C), and leak detection (SN-L).
What's in the Box
- Liebert SN-TH Modular Sensor unit
- Temperature probe with 6.6 ft (2m) cable
- Humidity probe with 6.6 ft (2m) cable
- Tool-less mounting bracket and hardware
- Quick installation guide
Full Specifications
Physical Dimensions
| Dimensions (W × D × H) |
2 × 3/4 × 1-5/8 inches (51 × 19 × 41 mm) |
| Net Weight |
0.25 lb (0.11 kg) |
| Shipping Weight |
0.44 lb (0.2 kg) |
Temperature Sensor
| Sensor Range |
41°F to 131°F (5°C to 55°C) |
| Accuracy |
±1.1°F (±0.5°C) |
| Operating Environment |
41°F to 131°F (5°C to 55°C) |
| Number of Probes |
1 temperature probe |
| Cable Length |
6.6 ft (2m) |
Humidity Sensor
| Sensor Range |
10% to 95% RH (non-condensing) |
| Accuracy |
±3.5% RH |
| Operating Altitude |
Up to 6,000 ft (2,000 m) / 6,500 ft per specifications sheet |
| Number of Probes |
1 humidity probe |
| Cable Length |
6.6 ft (2m) |
Compatibility
| Compatible Devices |
Liebert MPX rack PDUs, Liebert MPH rack PDUs, Liebert RDU-S monitoring devices, Liebert IS-UNITY DP Communications Card, Avocent ACS serial consoles |
| Maximum Sensors per String |
Up to 10 sensor probes (mixed integrated and modular) |
| Maximum String Length |
65.6 ft |
| Configuration |
Auto-discoverable, plug-and-play |
Installation & Warranty
| Mounting |
Tool-less mounting to Vertiv rack frames with T-slots |
| Included Accessories |
All necessary cables and mounting hardware |
| Warranty |
1 Year Limited Warranty Against Defects in Material and Workmanship |
Specifications are sourced from the manufacturer product page and may be updated.
