Feature(may vary by option.)

●Highly sensitive and fully automatic: highly sensitive and automatically reacts to weather changes, so you dont have to stay near the greenhouse. Easy DIY installation without obstacles!
●Working principle: use solar without electricity. It heats the cylinder with solar energy. Open or close the greenhouse openings when the temperature rises or falls to maintain optimal growth conditions in your greenhouse.
●UNIVERSAL The replacement cylinder is compatible with most single or double spring greenhouse window openers.
●Lifting height: max. 40 cm. Lifting force: max. 7 kg.
●The temperature is automatically set from 15 to 25 °C. Do not use this opener cylinder anywhere the temperature exceeds 50° (122F).

[2 pcs]

[1 pcs]

Description

Specifications:

Material: aluminium and stainless steel.

Colour: black.

Temperature range: 15 ~ 25 ℃ / 60 ~ 77 ℉.

Size: approx. 33 x 1.5 cm / 12.99 x 0.59 inches.

Approximate weight: 117 g.

Box contents:

2 x window opener cylinders only.

Note:

Do not use this opener cylinder anywhere the temperature exceeds 50° (122F).

Do not disassemble the cylinder.

These products must be refrigerated before use.