Solomark dew heater.
The button switch provides 2 different types of temperatures (max temperature with the red LED and min temperature with the green LED).
The DC 5.5 mm female plug is suitable for many controllers or you can add an adapters to suit your needs.
Technical specifications:
Weight: 47 g
Size: 300 mm x 50 mm plus the strap with Velcro.
Voltage: 12V.
Plug: DC 5.5 female.
Excellent for eyepieces, finders, small aperture telescopes and camera lenses.