100 mm lightweight motorized flat panel for precise flat frames, ASIAIR, StellaVita, ASCOM and INDI compatible. Built-in heater, ±0.25° encoder accuracy, 255 brightness levels, operates down to –25 °C, tested for 3,000+ cycles.
The WandererCover V4-EC 100 mm is a professional motorized flat panel designed for automated flat-field acquisition. Its built-in micro-encoder provides real-time position feedback with ±0.25° accuracy, allowing remote open/close control.
The new motor delivers over 50 % more load capacity and ensures durability for more than 3,000 cycles while remaining fully operational down to –25 °C. Integrated heating elements keep the panel dry or quickly evaporate dew, controllable in NINA via the “Device Actions and Commands” plugin.
The upgraded PWM dimming frequency provides 255 brightness levels for flawless flats, even at 0.1 s exposures, and enables fast 3 nm narrowband imaging. Includes exclusive cable management and soft cushioning pads. Compatible with ZWO ASIAIR Plus, ToupTek StellaVita and any DC-switch capable device.
Luminous diameter: 100 mm
Weight: 281 g
Outer diameter: 125 mm
Heating power: 3 W
USB port: 2.0 Type-B
Power supply: 12 V 2 A (DC 5.5 × 2.1 mm)
Encoder accuracy: ±0.25°
255 brightness levels, doubled PWM frequency
Operating temperature: down to –25 °C
Included: 1 WandererCover V4-EC, 1 m USB2.0 cable, 1 m DC5521 male-male power cable, 4 nylon cable ties

Exclusive cable management solution prevents damage to power cables during operation; Soft cushioning pads protect your telescope from scratches; Includes cable ties for universal installation

Built-in micro-encoder provides real-time, accurate feedback on cover position, allowing users to remotely check the angle status without opening the monitoring camera. Repeat positioning accuracy of up to ±0.25 degrees ensures precise open/close operations every time. Customizable opening/closing at any angle.

Features a brand-new motor with over 50% increased load capacity, ensuring durability and preventing gear box failure. Designed to withstand low temperatures, it operates reliably even in winter conditions as low as -20°C! After testing, the life of WandererCover V4-EC exceeds 3,000 opening and closing cycles.


Thanks to the encoder, V4-EC provides automatic detection of the open and closed position*. If your device is not around and manual setting is not possible, WandererCover can automatically detect obstacles and set the open and closed position.
*It is always recommended to set the open and closed angles manually! Use automatic detection as the last option only when the flat panel angle cannot be observed. It is normal for the motorbox to heat up during automatic detection. The angle detected is affected by many factors and success is not guaranteed. Do not try multiple times if unsuccessful.

The new ASCOM driver makes use easier. It also supports automatic or manual port selection and connection of up to 6 devices simultaneously.

The new dimming controller boosts PWM dimming frequency by 100%, effectively reducing the occurrence of banding and ensuring no banding during exposures of 0.1 seconds or longer. 255-level dimming meets the flat-field shooting needs, from color cameras to narrowband imaging. At maximum brightness, capturing 3nm narrowband only takes around 1 second!

Low temperature resistant design, able to work normally in environment as low as -25℃ (-13℉).

With the latest firmware, it supports control via ZWO ASIAIR Plus, ToupTek StellaVita, and any device capable of controlling the DC switch. Please refer to user manual to check it out!


