With external wired NTC temperature probe to achieve internal and external dual temperature measurement, suitable for more occasions! Three intelligent safety protections, real-time monitoring of the status of the discharge tube, safe and reliable! Built-in intelligent temperature-controlled fan switch and temperature-controlled speed design reduce fan noise and extend fan life! Plug Type: US Plug,it applies to Canada, India, Mexico, Thailand, Taiwan, the United States, the Philippines and so on. model: DL24 Colour:Black+green Material:plastic Package Contents: 2 x USB Tester 2 x Power Adapter 2 x Test line 2 x Computer cable 2 x Temperature probe transformer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.