APC by Schneider Electric AP9335TH Temperature & Humidity Sensor
Overview
The AP9335TH is a wired environmental sensor from APC by Schneider Electric designed to monitor both temperature and humidity in equipment rooms, server closets, data centers, and telecom enclosures. Where a temperature-only probe tells you the room is warm, the AP9335TH adds relative humidity — the second variable that drives condensation risk, static buildup, and equipment warranty conditions. It connects via a standard RJ-45 interface directly to compatible APC network management cards and environmental monitoring units, requiring no additional power supply or protocol adapter.
The sensor ships with a 3.9-meter (approximately 13-foot) integrated cable, giving enough reach to position it accurately within a rack bay or across a small equipment room without an extension. No display is built in — readings are reported upstream to the connected management device, which is the correct architecture for always-on infrastructure monitoring where local readout would go unread anyway.
Key Features
- Dual-parameter sensing (temperature + humidity): Monitoring temperature alone misses the humidity band where condensation and electrostatic discharge become real risks. The AP9335TH captures both in a single device, reducing the sensor count and cable runs needed to meet typical data center environmental monitoring requirements.
- RJ-45 wired interface: The RJ-45 connector mates directly with APC network management cards and environmental monitoring systems — no proprietary adapter, no USB dongle. Wired connectivity means no battery maintenance, no RF interference concerns, and no dropped readings during a network outage affecting wireless infrastructure.
- 3.9 m (13 ft) integrated cable: Long enough to reach from a rack-mount management unit to a representative mid-aisle or floor-level sensing point without an extension lead. For installations where the sensor needs to be positioned further away, verify cable extension support on your specific management card before assuming passthrough.
- No built-in display: Readings feed directly to the upstream management system rather than a local LCD. In a properly configured network management environment this is the correct design — alarms, thresholds, and logging happen at the controller, not the sensor node.
- Low environmental footprint: The AP9335TH carries a total carbon footprint of 0.85 kg CO2e — relevant for sites tracking Scope 3 procurement emissions or pursuing green data center certifications where embodied carbon in infrastructure equipment is reported.
- Plug-and-monitor deployment: The built-in sensor architecture (no external probe to route separately) keeps installation straightforward. Connect the RJ-45 to the management card port, assign the sensor in the management interface, and set threshold alerts — typical commissioning takes minutes rather than hours.
Integration & Compatibility
The AP9335TH is designed for use with APC network management cards and environmental monitoring units that accept RJ-45-connected data center infrastructure sensors. Before ordering, confirm that the specific management card or unit in your installation supports the AP9335TH sensor type — APC's management card ecosystem spans multiple generations and not every port on every card accepts this sensor variant. The RJ-45 interface is a physical sensor bus, not standard Ethernet — do not connect this sensor to a network switch port.
For sites running APC's EcoStruxure IT or NetBotz environmental monitoring platforms, verify sensor compatibility in the APC compatibility matrix for your specific management hardware version. The AP9335TH integrates into threshold-based alerting workflows, SNMP traps, and email/SMS notification chains supported by APC management firmware.
Frequently Asked Questions
Q: What interface does the AP9335TH use to connect to the management system?
A: The AP9335TH uses an RJ-45 connector — a proprietary APC sensor bus on that port, not standard Ethernet. It connects directly to compatible APC network management card sensor ports or APC environmental monitoring units.
Q: How long is the cable on the AP9335TH?
A: The integrated cable is 3.9 meters (approximately 13 feet). The cable is fixed — it is not a removable patch lead.
Q: Does the AP9335TH have a local display?
A: No. There is no built-in display. Temperature and humidity readings are reported to the connected APC management device, where thresholds, logging, and alerts are configured.
Q: Does the AP9335TH require external power?
A: The sensor draws power through the RJ-45 sensor port on the connected APC management card — no separate power supply or cabling is required.
Q: What is the warranty on the AP9335TH?
A: APC by Schneider Electric includes a 2-year manufacturer warranty with the AP9335TH.
Q: Can I use the AP9335TH with non-APC monitoring systems?
A: The AP9335TH is designed for APC's sensor bus ecosystem. Compatibility with third-party environmental monitoring platforms is not confirmed in available evidence — verify with your monitoring platform vendor before purchasing for non-APC deployments.
The AP9335TH is a straightforward sensor addition for any APC-managed environment where temperature alone isn't enough — and in most real deployments, it isn't. The 3.9-meter RJ-45 cable means you can position the probe at actual equipment intake level rather than at the management card faceplate, which is where the reading actually matters for thermal and humidity trending.
Technical Highlights:
- Dual sensing in a single unit: One RJ-45 port consumed, two environmental variables captured — temperature and relative humidity. In a rack-dense deployment this matters because management cards typically have a limited number of sensor ports; using one port for both measurements preserves capacity for additional probe points.
- 3.9 m fixed cable: Long enough for most single-rack deployments without an extension. Position the sensor at the cold aisle intake or mid-rack — not near the top where heat stratification skews readings upward and makes threshold alerts fire early.
- Wired RJ-45 bus architecture: No battery, no RF channel, no wireless dropout. In a generator-backed critical facility this matters — the sensor stays live through power events as long as the management card is powered.
Deployment Considerations:
- The RJ-45 port on this sensor is an APC sensor bus connection, not standard Ethernet — plugging it into a switch port won't damage anything but it also won't work. Confirm the target management card has an open sensor port of the correct type before the sensor ships to site.
- No local display means commissioning requires access to the management card interface to confirm the sensor is recognized and reading. Factor that into your installation workflow — don't assume it's working without checking the management UI.
For a server room or wiring closet where an APC network management card is already deployed and environmental alerting is an audit or insurance requirement, the AP9335TH is the direct-path addition — no third-party integration, no separate power run, commissions in under five minutes once the management card port is confirmed available.
