The APC Smart-UPS Online SRT 1000VA/1kVA is the smaller-capacity sibling in this catalog's SRT tower UPS range, using the same double-conversion online topology as its 1500VA counterpart for a clean, regulated output with no transfer delay during an outage. It ships as a tower unit with no rack kit included (though 2U rack-convertible using the separately-sold SRTRK4 rail kit), no network management card, and sealed VRLA batteries. Warranty terms match the rest of the range: 3 years repair-or-replace on the UPS itself, with battery coverage limited to 2 years. Its lower 1000VA/1000W rating suits a smaller load — a couple of servers, a network rack, or critical desktop equipment — rather than a full server room.