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2 WAY 1 PAIR WIERD INTERCOM [TW-209]

2 way conversation, distance 200m, power 1.5v x 4 AA batteries or 220v AC, easy installation, 6 month warranty 1pair wired intercom
njh-1

3 WAY INTERCOM [TW-003]

3 way intercom, No call charges No monthly rental Easy  installation, distance 200m 4 wire parallel cabling, 220v power, 6 month warranty
jln-600x448

4 WAY INTERCOM [TW-004]

4 way intercom, No call chargers No monthly rental Easy installation, distance 200m 4 wire parallel cabling, operating  power 220v, 6 month warranty