The AD7 is no longer available for purchase.

AD7 Product Description

Connect the HD25A to the AD7 to have easy access to both the SEI bus and the analog output. The AD7 has both a power jack for plugging in a US Digital PS-12 power supply and screw terminals for connecting a customer-supplied power supply (5.5 to 16VDC). DIN-rail mounting is available. There is a 6-pin RJ-12 female connector to connect the AD7 to the SEI bus via an AD2B or SEI-USB. This, in turn, allows complete control of the HD25A via your PC. Analog+ and Analog- are available on a two-position screw terminal plug/socket on the AD7.

Product Specifications

View here or download the specifications


1 DataH
2 Busy+
3 Analog+
4 Power
5 NC
6 Ground
7 Case Ground
8 DataL
9 Busy-
10 Analog-
Note: Please see the SEI page for more information on the SEI port pin-out.

Additional Information

Product Notes

  • US Digital® warrants its products against defects in materials and workmanship for two years. See complete warranty for details.



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