Temperature/Humidity Sensor Satel TD-1

TD-1 is a programmable temperature detector designed to monitor ambient conditions using two independent sensors: an internal built-in sensor and an optional external probe. It measures temperature in the range from -35°C to +60°C, provides audible and visual alerts when temperature crosses user-set minimum or maximum thresholds, and reports rapid temperature changes to indicate events such as sudden warming in cold storage. Replacing the external probe with a bistable switch allows toggling between two sets of critical parameters for the internal sensor (for example, day and night settings).

Advantages

The detector supports two independent inputs (internal and external), has a wide operating range (-35°C to +60°C) and can detect rapid temperature changes. It includes a four-digit LCD that shows current ambient temperature and the external probe reading, displays error messages, and contains three programming buttons for local configuration. TD-1 features a built-in piezoelectric transducer for audible alarms, a tamper switch, and two programmable relay outputs for integration with control panels or for switching external devices.

Key specifications

• Temperature range: -35°C to +60°C
• Two independent sensors: built-in internal sensor and connectable external probe (or bistable switch)
• Four-digit LCD for ambient and external probe readings, plus error messages
• Three programming buttons on the enclosure
• Audible signaling: built-in piezoelectric transducer
• Tamper switch included
• Two programmable relay outputs for control or communication

How to use

Install the TD-1 detector in the monitored space and, if required, connect the external temperature probe or a bistable switch. Use the three enclosure buttons to program threshold values for minimum and maximum temperature and to configure relay outputs and alarm behavior. The LCD displays the current ambient temperature and the external probe value; error codes are shown when applicable. Configure rapid-change detection settings if needed to receive alerts about abrupt temperature shifts.

Recommendations

Place the detector away from direct heat sources and drafts for accurate ambient readings. Regularly check the external probe connections and test relay outputs and audible alarm to ensure proper operation.