INTRODUCTION Analogue/ IP/ VOIP version optional. Characteristics: 1. Main body with whole aluminum alloy with stainless steel front plate. 2. Handset free, double loudspeaker, with indicator display while speaking. 3. Lightening protection to ITU-T K.21 4. One memory 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 to customer' s request. Approvals EMC: EN50121 ( Railway application- Electromagnetic Compatibility) EN55022: emissions EN55024: immunity Ingress Protection: GB4208-93 IP67 FCC ITU-T Recommendations K21 Packing details: Telephone unit size: 230 x 150 x70 mm 1pcs in each inner CTN box, size: 43.3 x 27.6 x 19.1 G.W: 4.5kg 4pcs in outer CTN box, size: 56.6 x 44.5 x42 G.W: 20.25kg 20GP: 2000PCS, 40GP: 4000PCS, 40HQ: 5200PCS 2006 Hongkong Koontech Technology Ltd KOON. The best quality in the world