supply of high voltage presence/absence detection and indication systemhigh voltage presence/absence detection and indication system,installation and commissioning of high voltage presence/absence detection and indication system with 5 core cable as per requirement at the time of installation and commissioning. [ warranty period: 30 month s after the date of delivery ] ] , high voltage presence/absence detection and indication system. technical specification: 1.- volta ge from the distence 1.5 meter to 2 meter. 2. sensing voltage range: 230v-33kv. 3. operating voltage: 18kv - 27kv. detailed technical spec as per attached document. [ warranty period: 30 months after the date of deliver y ] ]