Super Fast testing, even 3 seconds. Easily locate the Transponder coil in your car with beeps sound and LED indicators. Check the functionality of your car key remote with PL001 frequency tester. Quickly determine if the Induction Transponder coil is broken with no beeps or flashing lights. When your car key remote runs out of battery, don't worry, use PL011 to find the Transponder coil in your car, place the car key over there, the "Engine Stop" Button, congratulations, the car has been started! If the car key remote works normally when detected by the PL001 frequency tester and cannot the vehicle, let the PL011 close to the Induction Transponder coil, the "Engine Stop" Button, if no beeps sound and no flashing red light, it means the coil has been broken. When you want to clone and program the car key, you can use PL011 to find the Low Frequency Antenna/Transponder coil in the car, the distance about 5-10 cm remind you by beeps sound, when the red LED is fully shown, you can find there is a "key" mark over there. (Congratulations, you found the place!!) Color: Black Material: plastic Package Contents: 1*Detector(Without 2*AAA batteries) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.