16 keys vandal-proof stainless steel public phone keypad with carbon-on-gold key ... , shock, dust, falling raining, splashing, hose-directed water and vandal resistant, operation under hostile environments. Internet friendly key layout, key ... and FCC Protection Level: IP65(front panel) Vandal resistant IK09. Key Lifespan >10 million actuations. MTBF >20000H. MTTR <30min. Vandal Proof Telephone Keypad