The sounder is connected to control panels which use the Shield protocol.The sounder is supplied with a yellow Isolator LED located at the top of the base (see Fig. 2 Base diagram) that is illuminated if a loop short circuit is detected.Drill out the cable entries and mounting holes as required on the base, taking care not to damage the electronics.

Do not attempt to knock these out as the base will be damaged. Secure the base to the mounting surface with pan head screws. If IP65 integrity is required, fit the weatherproof mounting pad between
the base and the mounting surface. Fit the ‘O’ ring to the base (Fig.2) using a lubricant such as silicone grease.
To lock the sounder in the base, snip the break-out on the base rim (location shown in Fig 1.).F it the sounder to the base.