Contact magnetic wireless Hikvision DS-PD1-MC-WWS{P), frecventa de operare: 868 Mhz, comunicare bidirectionala, criptare: AES-128, distanta de comunicare: 800 metri in camp deschis, baterie CR123A 3.0V inclusa (durata medie viata 2 ani), indicatori de stare ( LED), dimensiuni: 104mm x 27mm x 25mmGarantie: 24 luni