The PPS200M43 also comes with a buzzer which you also mount in the boot which gives you audio beeps starting at 1.5m which will increase in frequency as you get closer to an object giving you a constant tone to stop at 30cm. There's also a mute button on the left side of the app's sensor screen. This mute option comes in very useful if, like us, you sit in your car for a couple of minutes after you've parked and don't want the FenSens constant, high pitch warning noise deafening you the entire time. The FenSens is an aftermarket, wireless parking sensor. It allows drivers to modernise older cars. Although it's also ideal for those who didn't opt for parking sensors and change their mind when they realise how much easier parallel parking could be. The wireless aspect also means no drilling into your car or professional fitting is needed. But it took us about an hour and a half, a range of tools and the removal of the plastic interior boot panel of our Ford Fiesta to remove the two final screws to actually reattach our reg plate. It was a faff we didn't expect at all, and one that soured our opinion a bit. Should I buy one?

The number plate frame replaces the frame that comes on many European cars as standard or it attaches to the car using the current screw holes securing the number plate and your number plate then clips into the frame. You may then need to make one small hole behind the number plate to feed a single cable through to inside the car or depending on your vehicle this could be routed upwards under a boot handle and into the car. As with our standard parking sensor systems the PPS200C then simply connects to the reversing light bulb for power and then is comes on automatically when you select reverse gear.

The box optimistically claims the FensSens can be installed in five minutes. It took us longer than that to remove the number plates off our car without scratching it (a hairdryer and tooth floss helps), but once that’s done it’s fairly easy to install. FenSens say the parking sensor is suitable for car washes and rain, but should not be submerged in water (though we can't imagine why anyone would do that anyway). According to the user manual, 'large raindrops' can cause false readings on the sensor. The device is also suitable for temperatures between -40 °C and 55°C - so you should be fine in the UK. That's not a problem most of the time, but it does rattle when closing the boot. The screws do at least have a non-standard head so that they can’t be removed/stolen using a standard screwdriver or other standard tools. The number plate frame replaces the frame that comes on many European cars as standard or it attaches to the car using the current screw holes securing the number plate and your number plate then clips into the frame. You may then need to make one small hole behind the number plate to feed a single cable through to inside the car or depending on your vehicle this could be routed upwards under a boot handle and into the car. As with our standard parking sensor systems the PPS200CM43 then simply connects to the reversing light bulb for power and then is comes on automatically when you select reverse gear.

The FenSens app is very self-explanatory and basically walks you through the the setup. Once the FenSens and Tap devices are paired with your phone via Bluetooth, you're ready to get going (or parking to be more accurate). The button clips onto your steering wheel for ease of use, though we found this to be a bit irritating when it came to actually turning the wheel. The number plate frame replaces the frame that comes on many European cars as standard or it attaches to the car using the current screw holes securing the number plate and your number plate then clips into the frame. You may then need to make one small hole behind the number plate to feed a single cable through to inside the car or depending on your vehicle this could be routed upwards under a boot handle and into the car. As with our standard parking sensor systems the PPS200M43 then simply connects to the reversing light bulb for power and then is comes on automatically when you select reverse gear. The number plate frame would replace the frame that comes on many European cars as standard or would attach to the car using the current screw holes securing the number plate. Your number plate then clips into the frame. You may then need to make one small hole behind the number plate to feed the three parking sensor cables through to inside the car or depending on your vehicle they could be routed upwards under a boot handle and into the car. As with our standard parking sensor systems the system then simply connects to the reversing light bulb for power so they come on automatically when you select reverse gear.The home screen has options for Google Maps, Spotify Music, Pandora Radio, YourMechanic and AAA Mobile. However, Pandora Radio, YourMechanic and AAA Mobile are apps that are US specific, so they're pretty much useless to anyone in the UK.