Home>Manual call points>MCP accessories>SMM-T331 KEY SMM-T331 KEY SMM-T331 KEY For SMM-T331 series manual call points More information Contact us about SMM-T331 KEY Contact us about SMM-T331 KEY Name Email address Phone Message Related products SMM-T331P-D SMM-T331P-D Pre-alert cover protection Relay output for monitoring use 12-24VDC input Multi poles changeover switches 30VDC 3A output With timer delay Door open with timer delay SMM-T331P-D