Application specification Model: knsp-01 Defend grade: gb 4208-93 ip 66 Call capability of phone: gb/t 15279-94 Application scope: metro, light railroad, speedway, ship, mine, etc. External configuration specification: External dimension: 320. 205. 120mm weight: 5. 5kg Installment dimension: 139. 260mm m8 bolt is used to install Upper cover Sealing circle Handset Ring hole Main body Keyboard Middle cover board Logo optional Cover spring Connection soft tube for wiring Main features of prod Cabinet aluminum alloy die. Casting. High anti. Violent, able to glisten, convenient for looking for. Optional Door cover. Orient automatically and good self. Closing. Convenient for use. Handset. Made of special engineering plastic. High anti-knock resistance. High tensile strength resistance and high anti-violent. All of the components including handset telephone receiver and transmitter. Keypad. Buzzer. Circuit board and cabinet are designed to be multi. Ayer waterproof and dust. Proof which is up to class iii grade. The whole machine is up to national standard gb4208. 93 ip 66. Phone is provided with high stability. High anti-jamming capability. And it is up to national standard 15279-94. Main technical indexes Applicable for various types of spc exchange and dispatching