supply of procurement of 1.wireless calling bell & 2.two-way counter communication system , supply of wireless calling bell with ac power plug in receiver x1, push button x1, 300m/ 100 0 ft operating range, multiple ringtones, led indicator. make- un1que, model- ub500 white or similar [ wa rranty period: 12 months after the date of delivery ] ] , supply of two-way counter communication system. with one host unit with gooseneck mic and speaker and one external unit speaker and mic, comprising separate switches and volume controls, 2 x5 watt (max.) in each amplifier, with frequency response: 100 hz - 10 khz and power supply 220/240 v ac mains. make- ahuja, model- ( ccs-2200) or similar. [ warranty period: 12 months after the date of deli very ] ]