l The Weatherproof phone will be designed to work on Railway, metro, tunnel, etc. Housed in robust aluminium alloy die-cast to against rust and corrosion, it will offer protection against the outdoor environmental extremes and vandals. Rot resistance l The unit will meet all the latest European/UK standards for EMC and US FCC, telephony waterproofing IP66, and lightening protection together with offering the level of performance and reliability demanded in such an environment. l DTMF(Dual Tone Multi Frequency) l Matching with most PABX,PBX and PAX systems. Main Product features1. Robust aluminium alloy die-cast body, 2. With handset, no keypad.3. Weather resistant to IP66 standard, service temperature range from:-30℃ to +75℃4. Magnetic reed hook-switch 5. Telephone line powered. No external power or battery back up required.6. Lightening protection to ITU-T recommendation K.217. Handset: made of special engineering plastic, high anti-knock resistance, Weatherproof, armoured cable optional, 8. Handset integrity wiring to enable the telephone system to check if the telephone unit is still operational.9. Selectable 7 minute time out optional, to release the line if the handset is left off hook.10. Vandal resistant and tamper-resistant hardware, 11. Easy installation/ replacement Packing1pcs in each inner CTN box, size: 43.3 x 27.6 x 19.1 G.W: 6.6kg4pcs in outer CTN box, size: 56.6 x 44.5 x42 G.W: 17kg20GP: 1000PCS40GP: 2000PCS40HQ: 2200PCS