CISBO REAR REVERSE PARKING SENSORS FOUR SENSOR BUZZER ALARM KIT TOWBAR COMPATIBLE (Light maroon)

Cheap Chinese rubbish. Product and service unworthy of Amazon. Device sounded sensor fault and not one of the sensors picked anything up. I have 20 years' experience with electronics and this was a faulty controller. The seller's response was barely coherent English suggesting I run the learning function per the instructions, which I'd already told them had been done. Just to emphasise the point, here, the instructions say to attach the green learning wire to the reversing light. The diagram says to connect it to the 12v supply. The written instructions say that having connected it to the reversing light the unit will beep when the vehicle is powered on and THEN says to put it in reverse and the process will complete. Now, logic dictates that if the green wire is connected to the reversing light, which is what the instructions say, the unit will not receive power from the green wire until you put the gearstick in reverse. But, as pointed out, the instructions say the unit will beep as soon as the vehicle is turned on, which can only happen if the green wire is connected to the vehicle's 12v supply, as shown in the diagram. So, to run the learning function 'per the instructions' is impossible because they are self contradictory in what they tell you to do. To be clear, neither connecting the green wire to the 12v main or the reversing light and running the learning program solved the problem, in spite of several attempts. Still 4 completely unresponsive sensors. In fact, the sensors themselves were working, an ultrasound meter detected a strong output from all of them and close-up you could hear them clicking. So, this was a faulty control unit, plain and simple. I replied to the seller making these points and have heard nothing in 3 weeks. Clearly either not interested or has no idea how the product is supposed to work. Suffice to say, adapting this kit to my vehicle, lengthening the buzzer wire etc. and having to rip it all out again leaves me with what will no doubt be rejected by the seller as not being in a returnable condition. I since bought a Road Angel kit at around £45 on ebay. Installation took 20 minutes and it works perfectly. Would have been £25 better of if I'd bought that first. For any product that involves modifying your car, and time spent doing the job right, the last thing you want is a dud that needs taking out again and a seller that leaves you hanging.

Wiring look on buzzer to short had parts missing, took over a week to get missing parts. Don't think they will last already playing up

I now have these fitted to my car, and am extremely pleased with the colour match and the help and confidence the sensors have given me.

Excellent set that works with tow hitch. Had ford ones before and these work as good. Easy to set up and fit. Bargain price too. Cheaper than replacing one ford sensor.