COMET P8652 – PoE WebSensor for 2 external temperature and humidity probes, 3 binary inputs

COMET P8652 PoE WebSensor 2-Channel + 3 Binary Inputs 

The COMET P8652 is the versatile PoE WebSensor (P-Line) with two channels for external temperature and humidity probes, as well as three binary inputs – the perfect solution for comprehensive and secure monitoring in server rooms, technical rooms, warehouses, production halls, clean rooms, or anywhere temperature, humidity, and additional states (doors, motion, switches, flooding, etc.) need to be monitored simultaneously. Thanks to Power over Ethernet (IEEE 802.3af), it requires only one network cable for both data and power – making installation simpler and more cost-effective.

The two external probes (DSxx series, sold separately) measure temperature and humidity at different locations – up to +105 °C and 0–100 %RH. The three binary inputs (voltage 0–30 V or potential-free) allow connection of door contacts, motion detectors, water detectors, switches, or other sensors. All values are digitally processed and transmitted over Ethernet in real time.

The integrated web interface and COMET Cloud (3 months free, then 1 Credit/year) offer charts, exports, alarms, and remote access via app or browser. Alternatively, Modbus TCP, SNMP, JSON, or XML can be used for your own SCADA/BMS/IoT solution. The P8652 is robust, maintenance-free, and designed for continuous operation – made by COMET.

Why the COMET P8652 is the professional multi-sensor:

• Power over Ethernet IEEE 802.3af – power + data via one cable
• 2 external T+RH probes – measurement at different locations
• 3 binary inputs – for door contacts, motion detectors, flood sensors, etc.
• Ethernet interface – direct network connection
• COMET Cloud ready – 3 months free, then affordable
• Modbus TCP, SNMP, JSON, XML – open for third-party systems
• Remote alarm function – email, SNMP trap, syslog
• IP65 enclosure – for harsh environments
• 3-year warranty

Technical data P8652:

• Temperature measurement range: –55 to +105 °C (depending on probe)
• Humidity: 0 to 100 %RH (depending on probe)
• Accuracy: depending on connected DSxx probe
• Binary inputs: 3 × (voltage 0–30 V or potential-free, <5 kΩ)
• Interface: Ethernet (RJ45) with PoE IEEE 802.3af
• Cloud: COMET Cloud (3 months free)
• Protocols: WWW, Modbus TCP, SNMPv1, SOAP, XML
• Power supply: PoE IEEE 802.3af or 9–30 V DC
• Operating temperature: –20 to +60 °C
• Protection: IP65
• Warranty: 3 years

Perfectly suited for:

• Server rooms & data centers (climate + door/water protection)
• Technical & heating rooms
• Warehouses & production halls
• Clean rooms & pharmaceutical production
• Building automation & BMS systems
• Multi-sensor monitoring with PoE
• Integration into existing networks
• Early warning of state changes

Installation & commissioning – completed in minutes

Mount the device, connect the PoE network cable (or external power supply), connect probes and binary sensors – done! The web interface guides you through the setup. With COMET Cloud, online in seconds.

Summary:

• P-Line WebSensor with PoE (Power over Ethernet) for measuring temperature, relative humidity, and three binary inputs for two-state signals. Remote alarm function
• The device has two connectors for external temperature and humidity probes as well as three binary inputs for two-state signals
• Potential-free contacts or two-state voltage signals can be connected to the binary inputs.

Scope of delivery:

• P8652
• User manual
• Traceable calibration certificate
• Free TSensor software for transmitter configuration
• COMET Cloud for 3 months
• External probes are not included