Aaon ASM01895 (OE391-12) Modular Service Tool SD used for monitoring and configuring setpoints of Zone Controllers such as VAV/CAV, MUA II, VCM, VCM-X, VCM-X E-BUS, RNE, VCB-X, SA E-BUS.  The modular service tool is connected to the zone controller using a prefabricated cable that comes with the tool.  The mini-Din communication cable is integrated into the Modular Service Tool to connect any Orion controller with a mini-Din connector socket for programming, monitoring, and troubleshooting purposes.  

The Modular Service Tool has a black plastic housing and a clear plastic bezel covering the display screen for protection.  The display features 4-line-by-20 characters.  Configuring is made easy by the 27-key membrane keypad; its menu-driven programming makes the entry and selection setup simple.

The Modular Service Tool comprises a 4GB SD memory card, 4 AA 1.5 V batteries, wall mounts, a G034560 DC power supply, a mini-Din communication cable, and an HZ000120 E-BUS communication cable.  The service tool does have an E-BUS port and E-BUS cable for E-BUS Module software. To hard-wire an old controller without a mini-DIN connector socket, you can use the RS-485 port.