Description

Dees Communications 154A-8-PSU Power fail Protection. 8 Trunk | 24VDC Simple Type: Power Protection The Models 154-8 (48VDC) and 154A-8 (24VDC) provide bypass for up to 8 trunks when the power fails. Easily installed using parallel connections, the Model 154 products work with ground start or loop start trunks and have automatic ground start built-in. They can be activated by power failure, a manual bypass switch or a ground from a local or remote location. The Model 154 can also be set up to control auxiliary equipment with two sets of relay contacts. You may install multiple units to handle more than 8 trunks. When the power is returned, the Model 154 will restore only those powerfail trunks that are idle. Others are restored only after they become idle. Calls are never lost a second time! Don’t be fooled by Uninterrupted Power Supplies (UPS). They only protect against power outages. The 154 provides full protection against system equipment failures as well as power outages. Download the datasheet (PDF)