Turn Your Smartphone into a Carbon Monoxide Detector with UEi COA1 Carbon Monoxide Detector Adapter. Now on Sale at: http://www.testersandtools.com/uei-coa1-carbon-monoxide-detector-mobile-phone-adapter.html
Buy Testo Smart Probes the first family of SMART instruments. The New Testo Smart Probes work with your smart phone or tablet to monitor and store measurement readings, and they are really the meters at much lower cost.
Yellow Jacket 40852 Mini Refrigerant System Analyzer - Simplification at Work. With Mini RSA you can quickly add digital pressure, temperature, and superheat/subcooling capability to any one of your everyday manifolds. Now on Sale at: http://www.testersandtools.com/testo-557-rsa-advanced-refrigeration-system-analyzer.html