TX7 A Delay Timer has been developed largely to protect vital components in the event that a major DC power supply fails. Essentially, in other words, it serves as a backup power source for switches that either provide power over Ethernet (PoE), which consumes more power, or controls that do not provide PoE, which consumes less power. In order to protect it from harm during transportation, we pack this TX7 A Delay Timer in a strong carton packaging.