... size, weight, volume, location to exclude the coin, key, belt ... frame, visible alarm simultaneously to ascertain the layout of ... receiving to avoid interference, frequency range from 4K-8K to avoid ... screws, Simply-to-follow instruction. · Harmless to human body: ... For option : Battery backup, up to 8 hours · For option : Network ... The ZLZX-2101A2 is designed to Banks, Embassies, Entertainment environments, ...