Dimensions 1.587" x .720" x .590" 8" receiver cable 8" pigtail (Alligator or Hairpin clip glow plug connection)   Weight 19 grams 25 grams with pigtail   Input/Output SwitchGlo 1st Gen: 4.8 - 6.8V or 6.9 - 8.4V input SwitchGlo Pro: 4V - 9V input Output Power: 4.8W (OS-8 Plugs)   Frequency Compatibility 27 MHz 35 MHz 36 MHz 41 MHz 50 MHz 72 MHz 75 MHz 2.4 GHz Any other frequencies un-tested   Power Consumption 0.44mah per second of glow time 2.2mah per 5 seconds glow (average start) 4.4mah per 10 second glow (auto shut-off) 33mah to start craft for a typical 15 flights per charge Over 2300 average glows on a 5200mah battery (assumes no other battery draw)     Glow plug average current draw measured at 1.5a   Requirements SwitchGlo 1st Gen: An available receiver channel for SwitchGlo SwitchGlo Pro: Works with any glow driven craft     Safety Automatic glow shut-off in 12 seconds or 60 seconds Airplane mode in case the toggle is left ON Auto shut-off time is reset every time the SwitchGlo trigger is re-cycled   Engineering SwitchGlo is designed by Zdatum Corporation, the same engineering firm to provide circuit design for projects within the Space Shuttle, Mars Probe, AH-1Z Cobra Helicopter, B1 Bomber, and numerous other military, commercial, and medical applications. The SwitchGlo Pro circuit has 31 components including an anti-interference circuit effectively eliminating any and all servo chatter caused by igniting the glow plug. SwitchGlo utilizes a programmable microcontroller enabling a our custom source code to control the glow efficiency as well as control other key features.   Pre-Production Testing SwitchGlo beta units were given to 30 R/C Helicopter, Airplane, and Truck enthusiasts and professionals. We estimate a pre-production SwitchGlo usage time of 360 flight hours. During this time, we collected surveys from each beta tester, providing us with detailed opinions of product perception, performance, features, size, weight, and price. The survey responses exceeded our expectation. All beta testers were extremely happy with SwitchGlo in all respects except size and weight. In our final production design, we reduced both size and weight by half. The same beta units are still in use and performing very well.       sales@SwitchGlo.com              Phone: 818.709.0268   Watch for more highly efficient R/C electronics from SwitchGlo in the future!