| 摘要 |
A sign (10) for display of an environmental condition, including a display surface (12) having at least one scale (16) indicating levels (16.1 to 16.6) of the environmental condition. At least one indicator (14) is provided which is movable over the at least one scale (16) to provide a visual indication of a predetermined level (16.1 to 16.6) of the environmental condition. Control means (202 to 208) are provided for moving the indicator(s) (14) over the scale(s) (16). The control means (202 to 208) includes a remote device management module (202) which is controllable from a remote location (110, 120) over a wireless data network (100) to move the indicator(s) (14) to the predetermined level (16.1 to 16.6). The present invention also provides a corresponding system for display of an environmental condition. INDICTOR 14 FEE BACK -- 140 REIC PLC LED DISPLAYMTO 202 204 2 0 MOTOR DRIVE 10FIG. 2 2611 |
