Main features:Matching with most PABX,PBX and PAX systems.1. Main body with whole aluminum alloy with stainless steel front plate.2. Handset free, with indicator display while speaking. 3. Lightening protection to ITU-T K.21.4. With keypad, Illuminated buttons optional.5. Adjustable 7 minute timeout optional.6. Waterproof grade is IP65.7. Support hotline call, can realize ring off automatically by the receiver. 8. The design is super thin and smart. Embed style and hanging style can be chosen. 9. Size according customer’s request. Applications: As Public telephone for indoor or outdoor, elevator phone, Taxi or bus stands or station, Highway call box. Railway, metro, ATM machines side, Tunnel, Port, Dock, Mines, Generation facilities… A good ideal telephone for use in wet or corrosive atmospheres Packing Unit size: 210*150*60mm1pcs in each inner CTN box, size: 43.3×27.6×19.1CM G.W: 5.0kg4pcs in outer CTN box, size: 56.6×44.5×42CM G.W:20.0kg20GP: 1000PCS40GP: 2000PCS40HQ: 2200PCS