Key Features

  • Provides an interface to NC/NO contact devices
  • 127 modules can be used per one loop
  • Address settable from 001 to 254 by a dedicated programmer
  • Loop powered and low standby current (1.7mA)
  • Can fit inside devices or electrical boxes behind devices


The Velocity Addressable Mini Input Module is intended for use as part of an addressable two-wire fire detection system. It monitors and transmits the status (normal, open, short, or active) and provides an address for devices equipped with NC/NO dry contacts such as pull stations, water flow switches and security catches to a control panel. The module is used for Class B (Style B & C) operation. 

The Velocity Addressable Mini Input Module is loop powered and can be addressed via a VDOT-AD2 programmer. It is small enough to be mounted inside or on the back of a monitored unit and does not require rigid mounting.


All components in the Velocity range are UL certified and comply with the requirements of Underwriters Laboratories (UL) 864 Control Units and Accessories for Fire Alarm Systems 10th Edition.

Tech Specs

SLC Applied VoltageRated Range 20 to 38 VDC
SLC Current ConsumptionStandby 1.7 mAActivated 7.2 mA (max)
SLC Line ImpedanceUp to 50 Ω
Number of IDC (Initiating Device Circuit)1 x Class B
IDC Circuit Rating15 VDC, 2.2 kΩ, 6.8 mA (max)
IDC Line ImpedanceUp to 50 Ω
EOL DeviceRE-10 k (10 kΩ, 1/4 W) (Included)2.2 kΩ resistance required for each dry contact switch in subtype setting 5 and 6.
Ambient Installation Temperature 0°C to 49°C (32°F to 120°F)
Storage Temperature-20°C to 60°C (-4°F to 140°F)
Max Relative HumidityUp to 93 % RH, non-condensing
EnvironmentIndoor dry use only
Max Quantity per Loop127 units
Address SettingVDOT-AD2 Address Programmer
Dimensions (W x H x D)69.8mm x 37.6mm x 17.2mm
WeightApproximately 34g



Velocity Addressable Mini Input Module

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