The thermo detector has two thermocouples, one sensor in the housing remains closed and the other exposed to the ambient air. Under normal conditions, both sensors will show the same temperature. When fire breaks out, the outer probe reacts much faster, causing the probes to register different temperatures. The detector detects the temperature difference and switches to the alarm state.
Thermo detectors are the perfect alternative to smoke detectors when their use is impossible. Sensitive sensors detect the temperature increase that occurs during combustion. If the room temperature exceeds the set value, or if the room temperature rises very quickly within a certain time, the thermo detector triggers.
The TH 4860 reacts from a temperature of 75 °C. If the room temperature increases very quickly, an earlier trip may occur.
Thermo-differential alarm at a glance:
| Matchcode | TH-4860 |
| Article name | Thermal maximal detector TH-4860 |
| Part number | A3 2080 |
| LED signs | red = alarm |
| IP code | IP43 |
| Weight | 0.13 |
| Housing | Plastic ABS |
| Housing type | |
| Colour | RAL 9010 (white) |
| Appliance class | I |
| Nominal working temperature | 20 |
| Environment temperature range | -20 °C - 90 °C |
Thermo detector, type TH 4860
24 volt DC, as a thermal differential maximum detector, alarm triggering at 75 °C, incl. relay socket, in a compact white plastic housing with alarm LED, with VdS approval, test number: G 200060. Only detectors with VdS approval may be offered!
 Brochure Control Panels | Brochure Control Panels |
| Brochure smoke and heat detectors control | Brochure about control of smoke and heat detectors |
| Catalogue (web) Smoke & Daily Vent | Catalogue (web) Smoke & Daily Vent |
| Brief instruction RM-2860/TH-4860/RM-3000 | Brief instruction for the smoke and heat detector RM-2860/TH-4860/RM-3000 |
| Environmental Product Declaration (EPD) | Environmental Product Declaration (EPD) |
| Safety instructions and warranty conditions | Safety instructions and warranty conditions |
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