The SENTRY Binary One and Three are two variants of binary transmitter operating in the 433MHz range.
These are standard dip-switch type remote controls that feature up to 4096 unique codes in the binary transmission, in either one or three button option. These transmitters are configurable to operate as standard remote controls or in "split code" mode of operation for townhouse complexes where a given transmitter may be used to control multiple devices such as gates and garage doors, alarm systems and the like. These transmitters also feature a split-code mode which is very useful for use in townhouse complexes where a common code may be set for the gate but still allowing the owner or tenant to have up to two user-unique buttons to control the individual garage doors.
Sentry Binary 3 Button Remote Transmitter 433MHz