If I could put a negative star I would. I do NOT recommend this meter. The first one sent to me didn't work at all, it always showed 0.00 for the tire pressure. Contacting the company is not easy either. I believe they are in Ireland but as they say the owner Dan contacted me again and I explained that the sensor was not what he said would contact his warehouse which he did and they sent one to me second. I opened the gauge again, put the batteries in, went to take the tire pressure, this time I got a reading, a wrong reading but a reading, then I hit the zero button to try and clear that reading, and it only shows 0.00 from now on. I've removed and reinstalled the batteries, tried different batteries and all it does is display 0.00. Save yourself the heartache and hassle, find and buy Snap-On, Matco, Mac or Cornwell Tool Truck from them.