Finally now available on it's own. These have been selling along with my
1765 Lumen OTF P60 drop-ins for some time, and I have had loads of loads of requests for them on their own, I just haven't had the machinery to be able to keep up with demand, but not any longer!
Order as many as you like, I've invested in some new equipment so I can now build these in a more reasonable amount of time. Still a lot of hand made TLC into each one though.
Depending on the type of regulation used in the driver of your light, the FETtie will either increase your runtime, provide more output, or most often both. No mechanical switch can match the extremely low 0.0034 ohm resistance of the FETtie.
How does it work?
The FETtie uses a solid state semiconductor, a MOSFET. Essentially a relay, with no moving parts, which is turned on by the clicky switch. The Clicky switch itself only conducts 100 nanoamps, that's 0.0000001A, to activate the semiconductor. This means the clicking mechanism will last nearly forever, as the electrodes will not wear from arcing. Mechanically each switch is rated for 50,000 cycles, which means you could click the switch 10 times a day for over 13 years, at which point it can be cheaply and easily replaced.
The FETtie uses a small coin battery, 1216 size. You do not need to worry about this battery becoming depleated however. It's like the battery in a watch, it will last for years. Even being left on, the switch will draw less current from the coin cell than it's self discharge rate.
Specifications:
Current - 25A+
Voltage - 12V MAX (20V available for $10 more if needed)
0.0034 ohm Rds(on) MOSFET resistance
Beryllium copper spring(95% more conductive than spring steel), Pure silver plated for extra conductivity, 24K gold plated contact area.
Gold plated contacts from the FETtie to host.
Threaded brass body acts as heatsink for MOSFET in high amperage applications.
Panasonic 1216 coin cell included
"Reverse" Clicky operation.
Here are some graphs comparing FETtie performance to a McClicky switch with various cells using my 4.2A Quad drop-in. These results would be compounded with higher current.
Payment and Shipping
$48 each (includes 1 boot, black, orange or GITD green)
extra boot $0.75 each
USA/Canada shipping $10 up to 10 switches (PM if you need more)
International shipping $15 up to 10 switches (PM if you need more)
USA/Canada Expediated Tracked and Insured shipping $25 up to 10 switches (PM if you need more)
Paypal: