COMET P8653 – PoE WebSensor for 2 external temperature and humidity probes, integrated flood detector

COMET P8653 – PoE WebSensor with 2 external T+RH probes, integrated flood detector LD-81, 3 binary inputs 

The COMET P8653 is the versatile PoE WebSensor (P-Line) with two channels for external temperature and humidity probes, an integrated flood detector LD-81, and three binary inputs – the ultimate solution for comprehensive, secure monitoring in server rooms, technical rooms, warehouses, production halls, clean rooms, or anywhere temperature, humidity, and water leakage must be monitored simultaneously. Thanks to Power over Ethernet (IEEE 802.3af), it only requires a single 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 integrated flood detector LD-81 (2.5 m cable) immediately detects water leakage and triggers an alarm. The three binary inputs (two freely usable) allow connection of additional sensors (door contacts, motion sensors, switches, etc.). 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 graphs, 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 P8653 is robust, maintenance-free, and designed for continuous industrial operation – made by COMET.

Why the COMET P8653 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
• Integrated flood detector LD‑81 – immediate water alarm
• 3 binary inputs – for door contacts, motion detectors, etc.
• Ethernet interface – direct network connection
• COMET Cloud ready – 3 months free, low-cost afterward
• 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 P8653:

• Temperature range: –55 to +105 °C (depending on probe)
• Relative humidity: 0 to 100 %RH (depending on probe)
• Accuracy: depending on connected DSxx probe
• Flood detector: LD‑81 integrated, 2.5 m cable (not extendable)
• Binary inputs: 3 × (2 freely usable, voltage 0–30 V or potential-free)
• 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 class: IP65
• Warranty: 3 years

Perfectly suited for:

• Server rooms & data centers (water protection + climate)
• Technical & boiler rooms
• Warehouses & production halls
• Clean rooms & pharmaceutical production
• Building automation & BMS systems
• Early warning of water leakage
• Multi‑sensor monitoring with PoE
• Integration into existing networks

Mounting & commissioning – done in minutes

Mount the device, connect the PoE network cable (or external power supply), position the probes and flood detector, connect binary sensors – done! The web interface guides you through the setup. Online within seconds using COMET Cloud.

Summary:

• P‑Line Web Sensor with PoE for measuring temperature and relative humidity, including flood detector and binary inputs for two‑state signals
• The device features three binary inputs
• The first binary input of the P8653 is intended for connection of the included flood detector LD‑81
• The two other binary inputs can be used to connect potential‑free contacts or binary sensors with voltage output
• Communication with the device takes place via an Ethernet network
• The P8653 can be powered either via an external power supply or Power over Ethernet (PoE).

Scope of delivery:

• P8653
• User manual
• Traceable calibration certificate
• Free TSensor software for transmitter configuration
• COMET Cloud for 3 months
• Flood detector LD‑81
• FURTHER EXTERNAL PROBES ARE NOT INCLUDED IN THE PACKAGE