Pegasus Ultimate Powerbox v3

20A Total Current Capacity with XT60 Input

The UPBv3 accepts a 12V-14V DC input via a secure XT60 female connector, capable of handling a total system draw of up to 20A. An integrated voltmeter (5-15V range) and ammeter (0-20A range) monitor your power supply in real-time, with overvoltage protection that instantly cuts power if the input exceeds 14.5V. This protects connected equipment from an over-voltage supply.

• High-Current Input: The XT60 input carries the full system current; Pegasus offers matching XT60 power supplies rated 10A (PEG-PSU-XT60) and 20A (PEG-PSU-XT60H).
• System-Wide Protection: Reverse polarity protection guards against incorrect power supply connections, while overvoltage protection acts as a final safeguard for all connected equipment.
• Real-Time Monitoring: The Unity Platform software displays live voltage and total current draw, allowing you to track your rig's power consumption throughout the night.

6 Smart and 2 Always-On 12V Outputs

Power distribution is managed across eight 12V outputs. Six of these are "smart" outputs, each capable of delivering up to 6.0A and featuring its own per-port ammeter. These can be individually switched on or off via software. Two additional outputs are always on, providing a combined 8A of passthrough power for essential components like your mount controller or mini PC that should never be accidentally turned off.

While each smart port can handle 6.0A, the system's total output is capped by the 20A input. This architecture gives you the flexibility to run high-draw devices like large-format cooled cameras, while individual port monitoring and overload protection automatically shut down a single problematic device without affecting the rest of your system.

3 Channels of 3A PWM AutoDew Control

The UPBv3 features three independent PWM dew heater outputs on RCA connectors, each delivering up to 3A of current. The built-in environmental sensor, with a temperature accuracy of ±0.5°C and humidity accuracy of 2-5%, constantly calculates the dew point. When set to "AutoDew" mode, the UPBv3 automatically adjusts the intensity of your dew heaters from the onboard sensor's dew point reading to keep moisture off your optics.

• Automatic Dew Control: In Auto mode, the UPBv3 decides when to activate your dew heaters and sets their intensity from real-time environmental data.
• Manual Override: You retain full manual control over the duty cycle of each of the 3 channels for flat panels, fans, or custom heating applications.
• External Sensor Support: An EXT port allows for an optional external sensor, which the system automatically prefers when connected.

Adjustable 3-12V and 12-24V Regulated Outputs

Two fully regulated, variable voltage outputs provide power for non-12V devices. The first output is adjustable from 3-12V with a 3A maximum current, perfect for powering DSLR/mirrorless cameras (with a battery coupler) or a Raspberry Pi. The second is a step-up (boost) regulator adjustable from 12-24V with a 4A max current (rated at 19V); it supports Intel NUC PCs at 19V and 10Micron mounts at 24V.

Alongside these, a single-pole (SPST-NO) power relay switch is available for controlling third-party equipment, rated for 10A at 250VAC or 5A at 30VDC, with the relay and socket together supporting up to 220V / 8A AC. These settings are saved in the device's memory, ensuring your custom voltages are restored automatically on every startup.

An 8-Port Industrial Grade USB 3.2 Hub

The UPBv3 eliminates the need for a separate USB hub by integrating an 8-port industrial-grade hub designed to operate from -40°C to +80°C. It includes six SuperSpeed USB3.2 ports and two High Speed USB2 ports, all of which can be individually switched on and off via software. This allows you to remotely power-cycle a non-responsive camera or other USB device without physically touching your rig.

Each of the 8 ports can supply up to 2.2 Amps, providing ample power for high-demand USB devices. The hub features short-circuit, overload, and electrostatic discharge (ESD) protection on every port, safeguarding both the UPBv3 and your connected equipment from electrical faults.

A 2.0 Amp Unipolar & Bipolar Stepper Motor Controller

A built-in stepper motor controller delivers precise, silent, and low-vibration focusing for nearly any motor on the market. It can drive both unipolar and bipolar stepper motors with up to 2.0 Amps per phase. This robust driver is compatible with motors from Pegasus, Starlight Instruments (HSM/MSM), Moonlite, Robofocus, and many others, connecting via an RJ45 socket.

The controller is fully supported by an ASCOM 6, Alpaca, INDI, and INDIGO driver, enabling autofocus routines in popular software like NINA, SGP, and MaximDL. Backlash compensation can be applied from your imaging software, and the motor's last position is stored automatically and restored at boot.

Wi-Fi (2.4GHz) and USB3 Control with ASCOM Alpaca

You can control the Ultimate Powerbox v3 through a direct USB3 connection or wirelessly over its built-in 2.4GHz Wi-Fi. The device can act as its own hotspot or connect as a client to your existing observatory network. Full control is available through the Pegasus Astro Unity Platform software, which provides a dashboard for all outputs, sensors, and settings.

Native ASCOM Alpaca support means the UPBv3 can be controlled without traditional drivers. Connect the UPBv3 to your Wi-Fi network or join its hotspot, run a one-off discovery in ASCOM Diagnostics, and Alpaca-compliant software can use its focuser and observing conditions functions (Pegasus currently lists Focus and Observing Conditions via Alpaca). The classic ASCOM 6 drivers bundled with Unity also cover the switches, and INDI and INDIGO support the device too, so it works with software such as N.I.N.A., Sequence Generator Pro and MaximDL.

A 400-gram VESA-Compatible Enclosure

The entire system is housed in a compact, blue anodized aluminum enclosure measuring just 127.3mm x 116mm x 30mm and weighing only 400 grams (14.1 ounces). The chassis is designed with VESA 75x75mm and 100x100mm M4 threaded mounting patterns. This allows you to stack a mini PC, like an Intel NUC, directly on top of the UPBv3, creating an integrated control and power unit that mounts as a single block to your telescope.

Centralizing Power and Data to Eliminate Cable Drag

By consolidating nearly every power and data cable on your telescope, the UPBv3 drastically simplifies cable management. Instead of multiple power and USB cables running from your pier to your moving telescope, only two are needed: a single 12V input cable and one USB3 data cable. All other connections (camera, guide camera, focuser, filter wheel and dew heaters) are short cables that move with the telescope, reducing the risk of cable snags during a meridian flip.

Pegasus UPBv3 vs. UPBv2 and Pocket Powerbox Advance

The Ultimate Powerbox v3 is a significant evolution from its predecessor and its smaller siblings, designed for larger imaging rigs.

• vs. Ultimate Powerbox v2: The UPBv3 adds two more 12V smart outputs (6 vs. 4), two more USB3 ports (6 vs. 4), and introduces a second adjustable output for 12-24V devices. It also adds integrated Wi-Fi and native ASCOM Alpaca support, which the UPBv2 lacks.
• vs. Pocket Powerbox Advance Gen2: The UPBv3 offers 6 individually switchable 12V outputs plus 2 always-on outputs, versus the PPBADV's 4 outputs switched together on a single shared 10A channel. The UPBv3 also has 8 USB ports (vs. 4), a built-in stepper controller (which the PPBADV lacks), three dew channels (vs. two), and two powerful adjustable outputs (vs. one).
• vs. Saddle Powerbox: The Saddle Powerbox integrates a mount saddle and provides 10A of total power with 4 USB ports. The UPBv3 is a pure power/data hub but offers double the total current (20A), double the USB ports (8), a built-in stepper controller, and two adjustable outputs, making it the choice for complex rigs with multiple cameras, focusers, and high-power accessories.