HST Part Number Configuration Guide

Example model number HST- A- ALO
(HST Series 5/8" - 140,160,190,210,225°F set points - No Options)

HST- Designates the HST Series

HST- # First digit after HST designates the sensor size:
A=5/8"*** B=9/16" C=16mm* D=20mm*

HST- #- ### Next three digits designate temperature set points:
ALO=140, 160, 190, 210, 225 degrees F
MEL*=160, 190, 210, 225, 275 degrees F
MEH*=190, 210, 225, 275, 325 degrees F
ALM*=225, 275, 325, 360 degrees F
AME=275, 325, 360, 450 degrees F
AMH*=325, 360, 450, 500 degrees F
AHI=450, 500, 600, 725 degrees F

HST- #- ### - # Last digit designate options:

*contact for availability
***Models shown are for Fenwal® DETECT-A-FIRE® models 27127, 28021, 27120, and 28020. Contact Skinner Innovations to confirm correct HST model to use with other sensors.
For other temperatures, sizes, custom options, custom temperature set points, consult Skinner Innovations: Email: info@skinnerinnovations.com