ProTek RC Electronic Switch w/Voltage Cutoff

This is the ProTek R/C Electronic Switch. The ProTek R/C Electronic Switch is a lightweight and compact MCU controlled digital ON/OFF switch for your radio controlled model. With the push of a button this digital electronic switch eliminates the problems with intermittent contact associated with mechanical switches. This ProTek R/C Electronic Switch can be easily mounted to the transponder mount of your model or any other suitable location using double-sided tape (optional bottom covers are included).

The ProTek R/C Electronic Switch includes a LiPo mode that when selected, will auto-detect low LiPo voltage and will cut-off power from your LiPo battery to prevent over discharging. LiPo mode can be turned off if other safeguards are in place or you are using a NiMH or NiCd battery. The ProTek R/C Electronic Switch also monitors the remaining capacity and condition of the battery pack, and indicates the status with the use of LED’s.

Features:

• Digitally MCU Controlled Unit
• Supports Multiple Battery Types
• Integrated LiPo Safety Mode 
• LED Battery Status Indication
• Small and Lightweight Design 
• Additional Bottom Cases Included

ProTek R/C is an AMain Sports & Hobbies brand.

This product was added to our catalog on November 28, 2014

Anonymous Friday, Jun 19 2015 (about 10 years ago) ProTek RC Electronic Switch w/Voltage Cutoff The switch is awesome. Been racing with two of them of both vehicles for over a year. Work like new. Zero issues. This review is purely to complain to Amain about the absurd up charge on this product. I got mine for 16 bucks each at vp pro usa. Protek product are good sometimes. But my god a 250% markup? Wtf 13 of 16 customers found this review helpful. michael sanchez Verified Owner Monday, Jan 19 2015 (about 10 years ago) ProTek RC Electronic Switch w/Voltage Cutoff Ok I tried it ! Maybe it’s just me or the choices I have made with switches ( on and off buttons ) on ALL of my RC’s ! This one didn’t last a day of practice ! Running this in a Losi 3.0 with Dyn lipo ! All of a sudden just cutt off – fully charged lipo – all connections brand new. There is NO WAY to run a product that you do not have the confidence in, when you are using when it comes time for the Amain event ! I do not recommend this product or endorse this product! No way to say it was a bad batch because when you buy something you expect it to work flawlessly the first time with out having to work out the BUGS or batch number supplied with it !
Again a day or practice and didn’t last ! I do not recommend this product !Not looking for a refund or store credit – just a product I can rely on ! 9 of 11 customers found this review helpful. Kurt Verified Owner Sunday, Mar 1 2020 (about 5 years ago) ProTek RC Electronic Switch w/Voltage Cutoff While the description speaks to the advantage of electrical connection vs. the potential for intermittent mechanical failures, what it does not present is the potential for electrical circuit board issues. I purchased two of these electrical switches in November 2018. My first one lasted from Dec 18 to Feb 20. It worked great. I kept my second one as a backup.
Over time, the nylon button cover deteriorated. A couple of weeks ago, the green ‘power’ light would not go out after turning off the switch. Then during my most recent race, my nitro buggy had a runaway which I thought was caused by my receiver battery since it was low voltage. But just to be safe, and since I had that weird green power light staying on at all times, I changed out the switch to my other one that I’d bought as a spare. When installing it, the switch seemed fine – no more green power light when turning it off. It seemed to function properly.
However, this past weekend during a race, with my new spare switch installed, and a newly charged receiver battery (a different one that previous) on the same old switch, I thought it odd that the power button displayed an amber light (meaning battery level sensed as low). I checked using two separate battery meters and the 7.4v Protek receiver battery was indeed at max capacity. So, I went ahead and raced.
My receiver batteries typically last all day when fully charged (two years worth of data to support it). I ran two 5 minute qualifiers, and then during my A-main right before the race started (I was in 1st place and had TQ’d), it seemed like my buggy flamed out on the pipe as my pitman was holding it because I was giving full throttle but nothing happened. However, when I was signaling to my pitman to put the buggy on the bump box to restart it he kept looking at me in confusion. I realized after this ordeal that this was because the buggy was still idling…only the receiver switch had started to malfunction and not register some of my inputs. Then, about 5 minutes into my A-Main, my buggy started cutting in and out with steering and throttle response before it got stuck at wide-open throttle and became a runaway. Luckily after pulling hard on the brake trigger multiple times, the input registered and the throttle went back to normal.
A second runaway with my second electric switch. The moral of the story is I personally do not think that these switches are any more reliable than mechanical ones. I think I’m going to go back to mechanical. 3 customers found this review helpful. Josh Yarbro Wednesday, May 10 2017 (about 8 years ago) ProTek RC Electronic Switch w/Voltage Cutoff I ran this switch for a month or so then I went out to the track for a race and as soon as i pushed the button the switch smoked and burned a hole in it. It burned up a brand new protek battery and r304 receiver along with it because when it smoked the switch would not activate on or off so it burned until i could get battery unplugged and amain told me to call the hobbyshop i got it from when they should back the product up. AVOID LIKE THE PLAGUE!!!! 3 customers found this review helpful. Anonymous Verified Owner Thursday, Jan 26 2017 (about 8 years ago) ProTek RC Electronic Switch w/Voltage Cutoff This is an excellent switch.
When I first held it in my hand I was not all that impressed for the price, but now that I have it installed I really like it. It’s great to be able to see the charge of the lipo receiver battery at a glance and its much smoother to operate than a mechanical switch.
I mounted mine to the transponder mount. I used two layers of foam tape underneath and screwed it down but not all the way to accommodate the tape (leaving 1-2mm). Hopefully the cushion will make this thing last!
One star off for value – as good as it is, this switch ain’t worth $40. I just finished my NT48.3 build and had to have one quick so I couldn’t wait for them to go on sale, but if you are not in a hurry you should shop around. These things can’t be much more than a few bucks to make and their mark up is unreal. 1 customer found this review helpful. Austin Blair Wednesday, Dec 10 2014 (about 10 years ago) ProTek RC Electronic Switch w/Voltage Cutoff This switch is awesome!It has a lipo cut off. Plus it even shows you how much power is left in the battery! Super compact as well. 2 of 3 customers found this review helpful. Shaun Runcie – PRACTICE KING Verified Owner Thursday, May 15 2025 (4 months ago) ProTek RC Electronic Switch w/Voltage Cutoff I’ve been using this switch exclusively for the past four years as my primary means of disconnect.
As someone who is known for running a long, consistent, and methodical practice and race program, I rely on components that can withstand the test of time. Each of my switches has lasted through more than 30-gallon stints, and I’ve never experienced a failure with my last five switches.
In addition to my main setups, I use this switch on my LMT monster truck, where it manages a separate receiver pack for my high-torque auxiliary circuit and steering servo without any issues for the last three years. It also performed excellently in my nitro stadium truck.
From my experience, past failures are often due to a couple of reasons:
– Some users leave their receiver packs connected to the switch instead of removing them. The electronic switch can cause parasitic drain on any power source connected to it, potentially leading to battery failure. It’s advisable to remove the battery from the circuit when not in use.
– Over time, the over-molded portion of the on/off button can deteriorate. I’ve seen many people cause failures by heavily washing down the switch, exposing it to excessive water during nitro buggy clean-up. Like all parts, replacement is necessary as needed.
Overall, this switch is widely used in racing, bashing, and other applications. The low voltage feedback has saved me numerous times from overlooking a discharged receiver pack. It’s a staple in my program, providing perfect power management for my radio-controlled models.
I highly recommend the Protek RC Electronic Switch. Thomas Burke Verified Owner Monday, Apr 22 2024 (about a year ago) ProTek RC Electronic Switch w/Voltage Cutoff when I got it beeped turning it self off every 2 minute I would like a refund on this YT: GhostintheRC Verified Owner Sunday, Jun 18 2023 (about 2 years ago) ProTek RC Electronic Switch w/Voltage Cutoff This electric switch makes turning on all the electrics a breeze. Highly recommended. Andrew Brown Verified Owner Saturday, Oct 9 2021 (about 3 years ago) ProTek RC Electronic Switch w/Voltage Cutoff To those of you looking at the price and wondering why it is so expensive I have come to my own conclusion. I have three of these in my three nitro vehicles. They are top quality and easy to work with. I did have one burn up literally the fourth time turning it on. I took it to Amain Hobbies in Chico and they looked right into it. They ended up burning up another switch (made me happy because I thought it was user error), come to find out it was one of my brand new protek 155T’s I put in was frying the switches. I paid the little extra and put in a pair of 170’s and it works like a dream. I have one of these switches in my TLR buggy, truggy and my HPI savage XL. William Reid Verified Owner Sunday, Oct 20 2019 (about 5 years ago) ProTek RC Electronic Switch w/Voltage Cutoff This review is prior to actually using the product I can comment on that after I use it. There is a very similar lipo on/off switch available online for 1/4th of this price. I wish I would have saw that and someone of the other reviews before purchasing. I buy almost exclusively from Amain on 90% of my rc stuff, and I have a local hobby shop they just don’t stock the racing gear I need. But I never would have thought they would have something like this marked up as high as they do. But I can say that they do have excellent customer service, and if I’ve ever had a protek product fail me, they will usually stand behind it and work with replacing it. Anonymous Verified Owner Wednesday, Aug 2 2017 (about 8 years ago) ProTek RC Electronic Switch w/Voltage Cutoff Works like a charm. No issues in many years of abuse. Long leads allow mounting in numerous areas of your battery box or chassis. Richard Hess Verified Owner Monday, Mar 23 2015 (about 10 years ago) ProTek RC Electronic Switch w/Voltage Cutoff a great product 4 others at my local track also have this switch and love it great product! John Shaw Verified Owner Tuesday, Jun 2 2015 (about 10 years ago) ProTek RC Electronic Switch w/Voltage Cutoff Has worked very well for me so far. I’ve had it for about 4 months.
Update: 4/21/16. Switch still works on my nitro buggy and truggy, but noticed case is cracking. I had to ca the switch on the truggy. I have one layer of parma gel tape under it. I may go with two layers.
Update 9/6/16. The two layers of parma type tape seems to work. Anonymous Verified Owner Friday, Jul 29 2016 (about 9 years ago) ProTek RC Electronic Switch w/Voltage Cutoff Mounted this onto my N5c, I have used it for about 6 weeks now. Working as expected and described. I would like to see another version of this switch that can handle the higher amperage of 20 amps View all reviews