PegasusAstro DewMaster 2 DewMaster2 controls five independent RCA dew-heater outputs through PWM, with a red 128 × 64 OLED and three-button front interface. USB-C and Wi-Fi hotspot/client operation add remote access through a browser or compatible imaging software.
Manufacturer model: PegasusAstro DewMaster 2 · Specifications checked against manufacturer data on 2026-11-03
DewMaster2 controls five independent RCA dew-heater outputs through PWM, with a red 128 × 64 OLED and three-button front interface. USB-C and Wi-Fi hotspot/client operation add remote access through a browser or compatible imaging software.
The included external temperature and humidity sensor provides environmental and dew-point readings for automatic heating. Two additional 3.5 mm inputs accept optional temperature probes, which can be assigned to heater outputs to regulate the temperature of optical components. These individual probes are not included.
Recommended power is 12–13.8 V DC through a 2.1 mm centre-positive input. The product page specifies up to 6 A per heater channel; two additional DC outputs provide pass-through power. Native ASCOM Alpaca Switch support is available over Wi-Fi and ASCOM 7 control over USB.
The enclosure measures 109 × 74 × 25 mm and weighs 250 g. It uses 6061 aluminium and has three M3 mounting holes compatible with PEG-SHOE. The package includes the controller, environmental sensor and 1 m DC lead. Keep the electronics dry; the enclosure is not waterproof.
Pegasus Astro manufacturer documentation
DewMaster2 manual and named-model webpage used. Display diagonal omitted because the manual contains both 2.1-inch and 2.3-inch wording. Optional individual temperature probes are not counted as supplied. No 30 A aggregate heater rating is inferred from five 6 A channel ratings.
| Supply voltage | 12–13.8 V DC recommended |
|---|---|
| Input connector | 2.1 mm centre-positive |
| Heater channels | 5 |
| Heater connectors | Five RCA PWM outputs |
| Maximum channel current (A) | 6 |
| Pass through outputs | Two 12 V DC outlets |
| Display | Red OLED, 128 × 64 pixels |
| Environment sensor | External temperature/humidity sensor included |
| Optional temperature inputs | Two 3.5 mm sockets; individual probes not included |
| Automatic control | Auto-dew; probe feedback for assigned heater channels |
| Device care | Not waterproof; keep clean and dry |
Data sheet
PegasusAstro DewMaster 2 DewMaster2 controls five independent RCA dew-heater outputs through PWM, with a red 128 × 64 OLED and three-button front interface. USB-C and Wi-Fi hotspot/client operation add remote access through a browser or compatible imaging software.
Manufacturer model: PegasusAstro DewMaster 2 · Specifications checked against manufacturer data on 2026-11-03
