Why Does 9.6V Compatibility Matter for a Remote Head Emergency Light? The right emergency light must match the system it connects to. A Remote Head Emergency Light is not a universal fixture. Its 9.6V rating is a key detail because the remote head is designed to work with a compatible emergency system. Checking voltage first can prevent a mismatch and keep emergency lighting ready when normal power is lost. Read The Post: https://www.shineled.us/blogs/news/why-does-9-6v-compatibility-matter-for-a-remote-head-emergency-light