The TSF400-0 is a specialised, surface-mount liquid water detection sensor housed in a compact, fully potted IP65-rated enclosure (88 x 17 x 46 mm}. Engineered with five machined metal electrodes positioned on its base, the unit operates on a precise resistive conductivity principle, utilising a wide 4.5 to 26VDC operating voltage range and an ultra-efficient 5mA at 12VDC standby current draw. Featuring a built-in dual-colour diagnostic LED (Green for dry, Red for wet) and an integrated 3-meter 3-core connection cable, the sensor provides a direct NPN open-collector output rated strictly up to a maximum of 30VDC @ 100mA sink current.
The TSF400-0 is engineered specifically for localised, floor-surface moisture tracking in high-risk zones:
While the TSF400-0 handles immediate fluid threats, Teracom’s network controllers allow you to unify this digital data within a comprehensive environmental monitoring matrix. In data centres, commercial facilities, and unmanned telecom hubs, undetected moisture is rarely the only threat to operational continuity. By integrating Teracom’s TCG or TCW controllers with the TSF400-0 floor sensor alongside various climate, electrical, and physical sensors, facilities managers can consolidate multi-vector risk tracking into a single, cohesive dashboard.
Whether monitoring a critical server facility or a remote infrastructure substation, this unified ecosystem ensures that overlapping threats, such as HVAC equipment failures, environmental spikes, power anomalies, or sudden pressure drops, are immediately detected and logged.
The table below outlines how specific sensors integrate with Teracom controllers to safeguard your infrastructure across multiple threat vectors:
| Threat Vector | Monitoring Sensor | Controller Interface | Automated Logic Response |
|---|---|---|---|
| Water Detection | TSF400-0 Floor Probe | Digital Input (DI) | Closes localised supply valves via Relay; issues urgent SMS/Email alerts. |
| Ambient Climate Shift | TSM400-4-TH Wall Node | RS485 Modbus RTU Bus | Triggers HVAC fan over-rides or changes cooling-loop targets; tracks data-center thermal mapping profiles. |
| CO2 Gas & Barometric Pressure Changes | TSM400-4-CP Gas Node | RS485 Modbus RTU Bus | Forces dynamic fresh-air intake damper positioning; flags room-pressure breach alerts. |
| Main Power Failures | TSV101 AC Voltage Detector | 1-Wire Sensor | Flags blackout/UPS input drops instantly via galvanic isolation; switches cellular loggers to power-save mode. |
| Smoke & Fire Outbreaks | TSS8030R Smoke Detector | Digital Input (DI) (Latching Relay) | Locks output to alarm state; enables remote power interlock shutdowns and fires immediate high-priority alerts. |
| Pressure Changes | 4-20mA Pressure Transducers | Analogue Input (0-10V / 20mA) | Detects critical pressure drops in cooling lines or HVAC plenums; generates system alarms. |
Applications
Frequently Asked Questions
The TSF400-0 is a water leak detection sensor designed for detecting the presence of water on a surface without the need for a separate alarm module. The sensor uses 5 electrodes on the base of the sensor and trips when one of the four outer electrodes connects to the central electrode. This sensor is ideal for monitoring a HVAC drip tray, floors in server rooms or simple domestic or commercial flood alert systems. The output is rated for 30V @ 100mA and can be connected to digital alarm units for providing local or SMS alerts.
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