SM19A1 Audio Details Technical Specifications Handheld Microphone with Keypad (IP54)Ergonomically designed handheld microphone with large programmable keys and emergency call button for ease of use and convenience.Find a dealerHighlightsFunctionsTechnical SpecificationsRelated Products MD785i (Discontinuation Date: March 31st, 2024) MD785 (Discontinuation Date: March 31st, 2024) HM789 MD785i Full Duplex (Discontinuation Date: March 31st, 2024)