- USB interface; plug into a USB power adapter; a portable charger; the USB cable makes lens warmer ideal for indoor and outdoor use;
- Temperature range; working temperature adjustment range from 25 degrees to 70 degrees to suit different weather environments;
- Fastener design; with handy fasteners; it can wrap around your lens or scope with security and is easy to adjust;
- 430mm effective heater length; liminate dew; fog; and condensation with our specially crafted lens warmer during cold weather photography;
- Designed with PWM Function, which can provide more accurate, energy-saving, efficient heating control, thus enhancing the performance and reliability of telescope equipments.
Note: This dew heater is suitable for SV503 70ED, SV48P, MK105, SV503 80ED, SV503 102 ED, SV550 80 APO
In Stock
SV172 PWM Function Dew Heater Strip 430mm
This 430mm Dew Heater is designed with PWM function, which can provide more accurate, energy-saving, efficient heating control, thus enhancing the performance and reliability of telescope equipment.
Total Materials
PWM Function
Hot Stamping LOGO
Compatible with Telescope & Camera
The Comparison of SV172
| Model | W9132A | W9132B | W9132C | W9132D |
| Total Length | 320mm | 400mm | 480mm | 550mm |
| Heater Length | 240mm | 320mm | 400mm | 430mm |
| Interface Type | USB Type-A | USB Type-A | USB Type-A | USB Type-A |
| Input Voltage | DV 5V | DV 5V | DV 5V | DV 5V |
| Input Current | 1.45A~1.55A | 1.8A~1.95A | 1.9A~2.2A | 2A |
| Power | 7.25W - 7.75W | 9W – 9.25W | 9.5W-9.75W | 10W |
| Temperature Adjustable | Yes | Yes | Yes | Yes |
| PWM Function | No | No | No | Support |
| Power Cable Length | 1.8m | 1.8m | 1.8m | 1.2m |
| Strip Material | Imitation OK cloth + SBR + Black-T +Aluminum Film+ PU | Imitation OK cloth + SBR + Black-T +Aluminum Film+ Pure Cotton | ||
| Power cord material | Nylon | Nylon | Nylon | Silicone |
| Fit for OTA | SV503 70ED | SV48P 90, SV503 80ED, SV550 80APO | MK105, SV48P 102, SV503 102ED | |
- 1. Compatibility: designed for astronomy telescopes and compatible with DSLR camera lens, protecting optical devices like telescope and camera from fogging or freezing
- 2. Energy-saving: PWM technology allows for adjusting the working cycle and pulse width of the heating tape according to the needs, providing heat only when necessary. This reduces energy consumption and saves electricity.
3. Precise control: it control enables precise temperature regulation of the heating tape to meet specific requirements. By changing the pulse width and cycle, high-precision temperature control can be achieved, avoiding overheating or excessive cooling.
4. Extended lifespan: due to the intermittent operation of PWM heating tapes, their lifespan is longer compared to continuously operating regular heating tapes. Additionally, the stable temperature reduces the risk of equipment damage caused by temperature fluctuations.
5. Efficiency: PWM heating tapes can quickly respond to temperature changes and reach the desired temperature in a shorter time. This fast response and efficiency improve heating effectiveness and reduce energy waste.