1, gsm alarm system wireless 2, 90 zone alarm 3, LCD display alarm 4, wireless alarm LCD display gsm alarm system wirelessThe home LCD GSM alarm systemModel:VIP-603 Main Features :1, LCD display ... on, will also alertTechnical parameter for the gsm alarm system wireless:Operating voltage: Input 100-250V, output 12V. Wireless receiving distance: >100m Operating Frequency: 433 ...