M500R System Sensor Relay Control Module The M500R System Sensor Relay Control Module is intended for use in intelligent, two-wire systems, where the individual address of each module is selected using the built-in rotary decade switches.
It allows a compatible control panel to switch discrete contacts by code command.
The relay contains two isolated sets of Form-C contacts, which operate as a DPDT switch and are rated in accordance with the table in the manual.
Circuit connections to the relay contacts are not supervised by the module.
The module also has a panel controlled LED indicator. This module can be used to replace an M500C module that has been configured for Form-C operation
The M500R mounts directly to 4+ square electrical boxes (see Figure 2A). The box must have a minimum depth of 21/8+.
Surface-mounted electrical boxes (SMB500) are available from System Sensor. The module can also mount to the DNR(W) duct housing.