Description The ASM01895 Modular Service Tool SD is a compact operator interface device designed by AAON to support the configuration, monitoring, and troubleshooting of HVAC and industrial control systems. It features a clear 4-line by 20-character LCD display and a 27-key membrane keypad, offering intuitive interaction with a wide range of AAON controllers. Housed in a rugged black enclosure, the tool is built for field durability and portability. Technical Specifications Condition New/Never Used Surplus Brand AAON Category PLCs/Machine Control Part Number ASM01895 Subcategory VDC Logic I/O Brain/Interface Product Type Modular Service Tool / Operator Interface Display 4-line x 20-character LCD (with clear protective bezel) Keypad 27-key membrane Communication Protocol HSI Open Protocol Token Passing Interfaces RS-485, E-BUS Baud Rates Supported 9600 or 57,600 Power Supply (4) AA (1.5V) batteries (supplied) Operating Temperature 10°F to 149°F (-12°C to 65°C) Operating Humidity 0% to 95% RH, non-condensing Memory Card Programmable 4 GB SD card Enclosure Rugged black plastic case with clear bezel window Dimensions (L x W x H) 4.35 in x 8.45 in x 11.30 in (packaged) Applications Configuration, monitoring, and maintenance of AAON systems Weight Approx. 3.00 lbs (1.36 kg) Information About ASM01895 The ASM01895 is a multifunctional diagnostic and programming tool developed by AAON for interfacing with controllers such as the VCCX2, VCM-X, RNE, and VAV/CAV modules via RS-485 and E-BUS ports. Powered by four AA batteries, it operates across a wide temperature range of 10°F to 149°F and 0–95% RH non-condensing. The Modular Service Tool stores configurations and logs through a 4 GB SD memory card and uses HSI open protocol for communication. It enables maintenance professionals to efficiently service HVAC systems, perform software updates, and troubleshoot equipment with precision. Key Features: Multi-Controller Compatibility: Interfaces with a wide array of AAON controllers including VCCX, VCM, and VAV modules. RS-485 & E-BUS Support: Offers dual communication channels for system flexibility and legacy support. Clear LCD Display: 4-line by 20-character screen for easy data navigation and visibility. Modular Design: Adaptable layout for varied industrial service requirements. Power Efficient: Operates on four AA batteries, ideal for portable field use. Robust Environmental Tolerance: Withstands temperatures from 10°F to 149°F and up to 95% RH. Programmable Storage: Integrated 4 GB SD card for data logging and firmware updates. User-Friendly Interface: 27-key membrane keypad for intuitive configuration and control. Compact & Portable: Durable housing with a lightweight build for on-site mobility. Durability in Harsh Environments: Enclosure built to resist industrial wear, dust, and minor impacts. The ASM01895 delivers reliable, easy-to-use field servicing capability for technicians working with AAON control systems.