Dew heater strap for telescope for 9" OTA

Description

Dew Strap with both DC5.5*2.1 & RCA male plug and temperature controller.
width 50mm
voltage 12V
power 10-15w
connector DC5.5*2.1 & RCA male
Length   Diameter(CM)  suitable tube
60cm     19cm                  7"
70cm     22cm                  8"
80cm     25cm                 9"
95cm     30cm                 10"
110cm   35cm                 11"-12"