The SVBONY SV172 400mm Dew Heater Strip is designed to keep larger telescope optical tubes, camera lenses, and imaging equipment free from dew and frost during long observing and astrophotography sessions.
As temperatures drop, moisture can quickly form on exposed optics, reducing image quality and prematurely ending an otherwise perfect night under the stars. The SV172 gently warms your telescope or camera lens just enough to prevent condensation without affecting optical performance.
Powered by a convenient 5V USB power source, the heater strip features an integrated 3-level temperature controller, allowing you to select the ideal heating level based on ambient conditions. Its premium multi-layer insulated construction, alloy fiber heating element, and aluminum heat distribution layer provide rapid, uniform heating while maintaining excellent energy efficiency.
Ideal for larger refractors, APO telescopes, guide scopes, camera telephoto lenses, and smart telescopes, the SV172 ensures your optics remain crystal clear from dusk until dawn.
Note: A 5V USB power source (USB power bank or USB adapter) is required for operation and is sold separately.