2N® Analog Safety - 1 Button 2N® Analog Safety is a compact emergency intercom; Resistant to extreme temperatures, dust, mechanical damage and vandalism. In combination with 2N GSM gateways can be used even where there is no telephone infrastructure. The unmissable orange colour and blue backlit button will ensure that it can be easily located whenever necessary, and help summoned simply at the press of a button. Highly damage resistant Visible in all circumstances Easy PBX integration