Description
Dual LEDs and Day Time Colour ID
The SR-21 provides a colour identifier for daytime use in addition to the components in the SR-15 and SR-20. It can also be maintained or replaced if required. Studs are either uni or bi directional.
Dual LEDs and Day Time Colour ID
The SR-21 provides a colour identifier for daytime use in addition to the components in the SR-15 and SR-20. It can also be maintained or replaced if required. Studs are either uni or bi directional.