Continuity Tester with 2 Batteries operates on latest technology and allows checking the continuity of any type of cable. The Continuity Tester is available in compact construction and can be easily carried. MDR Electronics, an ISO 9001: 2008 and ISO 14001:2008 certified company manufactures Continuity Tester with 2 Batteries. MDR Electronics also manufactures a wide range of electronic accessories, Cables and Spare Parts for home theatre or audio systems, computers, laptops, gaming, camera, fibre optic and security & surveillance systems, under the brand name `MX`. The Continuity Tester operates on dual batteries.