Internal Watch And Sd Card - Val Controls I 24-AF Series Hardware Manual

5.5 Internal watch and SD card

5.5.1 Electrical specifications
Internal Watch
Time deviation
Aging
Temperature coefficient
Battery life (Estimated)
Please contact Val Controls for a replacement battery.
The SD card is used to store signatures. Do not move the SD card between devices. Contact Val
Controls for a replacement SD card.
Disposal of this product and/or battery shall be in accordance with local environmental laws and
regulations.
Val Controls A/S • Sallingsundvej 5 • DK-6715 Esbjerg N • Tel. +45 7547 0600
DHW-UM-004
Revision: 4
Δf/fo =
Δf/fo =
β
= -0.034 +/- 0.006ppm/°C²
10 year
vc@valcontrols.com • www.valcontrols.com
+/- 20ppm
+/- 3ppm / Year
20/20