I was not to sure about this little device. I have a Robitronics Timing set we use on our backyard track. The Robitronics Transponders go for about $30.00 so I was curious about this little jewel. I wanted to mount a transponder on my 250 racing quads and try timing our races. The thing worked! Not risking a $30.00 plus RS163 in a crash. The only con in this little jewel is the connector. I soldered mine and replaced it with a JR style plug and longer lead. I highly recommend this product. I will be getting more

I was not to sure about this little device. I have a Robitronics Timing set we use on our backyard track. The Robitronics Transponders go for about $30.00 so I was curious about this little jewel. I wanted to mount a transponder on my 250 racing quads and try timing our races. The thing worked! Not risking a $30.00 plus RS163 in a crash. The only con in this little jewel is the connector. I soldered mine and replaced it with a JR style plug and longer lead. I highly recommend this product. I will be getting more

I was not to sure about this little device. I have a Robitronics Timing set we use on our backyard track. The Robitronics Transponders go for about $30.00 so I was curious about this little jewel. I wanted to mount a transponder on my 250 racing quads and try timing our races. The thing worked! Not risking a $30.00 plus RS163 in a crash. The only con in this little jewel is the connector. I soldered mine and replaced it with a JR style plug and longer lead. I highly recommend this product. I will be getting more

Excellent transponder for Robotronic timer. I recommend.

Excellent transponder for Robotronic timer. I recommend.

Excellent transponder for Robotronic timer. I recommend.