Four-button compact two-way keyfob. Panic function (TCC800M only). Rolling code encryption. Feedback on all action. System status on request. Warning in case of intruder alarm when unset and Warning in case of low battery. RF Range: >50m on site (2000m in open field). Radio Type: ALPHA and V2GY. supplied with 2 color rings. Dimensions 56 x 48 x 9mm. Compliant to EN50131 Grade 2, Class II.