Sealed Unit Parts Co. Inc. (SUPCO): Low-Voltage Magnetic Jumper
The Magjumper™ MAG1YL is a powerful low-voltage magnetic jumper designed by and for technicians. According to the company, the device eliminates popping-off terminals. It is made specifically for recessed terminals in thermostats, controls boards, sensors, switches, alarm panels, etc. The magnetic jumper has a 30 vac/vdc, 5-A maximum.