Tenders for Supply Of Talk Back Loud Speaker With Press To Talk Working On 110 V Ac/ 12V Dc, Bridge Loss 0.5 Db, Maximum Power Loss 25 Db Loud Speaker Output 0.5 Watt, Maximum Power Consumption 3 Watt Suitable To Us E On Underground Cable . One Post Type And One Table Type In One Set. Warranty Period: 30 Months After The D Ate Of Delivery