Accurately pinpoint and diagnose weak points in your machinery with this ultrasonic leak detector from Beha-Amprobe. It's a versatile bit of kit that detects escaping air, gas or water, so it's ideal for plumbing, automotive and construction jobs. The device is straightforward to use – just point the head of the receiver up against the unit you're investigating and listen out for noise. It comes with a transmitter for use in tasks when there isn't enough ultrasonic sound for the receiver to pick up on its own. Headphones are supplied so you can hear feedback without interference.

• Detects a frequency range between 20 and 90kHz, so it's a versatile option
• Receiver's inbuilt filter setting sifts out background noise for more accurate results
• IP40 rating means it's protected against objects greater than 1mm in size
• Battery-powered for mobile use
• 6.35cm LCD screen presents data clearly

• HVAC systems
• Mechanical engineering
• Industrial automation

Yes. You'll receive four AA batteries to power the receiver and two AAA batteries to energise the transmitter, so you can begin taking measurements right away.