For APC Smart-UPS RT 20 kVA - 1 year repair service and technical support via telephone - Next-business-day on-site service during normal working hours (8×5×NBD) - Incl. replacement parts, internal batteries, travel expenses and labour . This service option can be purchased up to five years after the first system start-up. . Please give the following details in your order: - UPS system (APC reference no.) - UPS serial no. - Device location and contact person