Pegasus Astro Digital Temperature Sensor for DewMaster 2
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This optional temperature probe sensor (sold individually) is available for use with the Pegasus DewMaster 2 and can be connected to the T1 and T2 temperature probe sockets on the side of DewMaster 2. These probes can be mounted on the telescope hood to monitor the optic cell’s temperature or on the dew bands to measure their temperatures. Using these readings alongside the ambient temperature, the device intelligently adjusts the heater power to prevent dew formation, ensuring optimal seeing conditions remain uninterrupted.

Setup and Operation
The following instructions are from page 7 of the DewMaster 2 manual:
- Clip the provided environmental sensor to the EXT port.
- Plug this temperature probe into T1 and T2 sockets (optional).
- Insert the 2.1mm plug into the DC power cable. The controller will initialize and the status LED will turn solid red after a second. The OLED screen will instantly show the splash logo of the DewMaster2 device. After a few seconds, the device boots fully and shows the Dew Power Control screen.
- If the environmental sensor is connected and detected by DewMaster2, the OLED display will recycle each screen every 10 seconds showing “Dew Power Control” or “Env Conditions”.
| Product Banner Type | new |
|---|---|
| Free Shipping Graphic | Free US Shipping |
| Hide Found a better Shipped Price on Frontend? | No |
This optional temperature probe sensor (sold individually) is available for use with the Pegasus DewMaster 2 and can be connected to the T1 and T2 temperature probe sockets on the side of DewMaster 2. These probes can be mounted on the telescope hood to monitor the optic cell’s temperature or on the dew bands to measure their temperatures. Using these readings alongside the ambient temperature, the device intelligently adjusts the heater power to prevent dew formation, ensuring optimal seeing conditions remain uninterrupted.

Setup and Operation
The following instructions are from page 7 of the DewMaster 2 manual:
- Clip the provided environmental sensor to the EXT port.
- Plug this temperature probe into T1 and T2 sockets (optional).
- Insert the 2.1mm plug into the DC power cable. The controller will initialize and the status LED will turn solid red after a second. The OLED screen will instantly show the splash logo of the DewMaster2 device. After a few seconds, the device boots fully and shows the Dew Power Control screen.
- If the environmental sensor is connected and detected by DewMaster2, the OLED display will recycle each screen every 10 seconds showing “Dew Power Control” or “Env Conditions”.
| Product Banner Type | new |
|---|---|
| Free Shipping Graphic | Free US Shipping |
| Hide Found a better Shipped Price on Frontend? | No |
Pegasus Astro Digital Temperature Sensor for DewMaster 2 # PEG-TEMP-SENS