Submittal

LAARS M4
®
EXT
Date:
Project #:
Engineer:
Prepared By:
Bid Date:
Project Name:
Location:
Contractor:
Standard
Equipment
• Extension module (used
with Laars M4) for up to six
additional boiler stages
• Ready to use with RS485 cable
included
Specications
Voltage Input 120VAC 60Hz
Power Consumption 12 VA Max
Extension Numbering Toggle switch A or B
LED 1 power: (dual color green (A)/red (B)),
1 comm, 6 output signals (dual color green (A)/red (B))
Modulating Signals Available 0-5V, 1-5V, 0-10V, 2-10V and 4-20mA
Output 6 N.O. SPST relays to start/stop boiler
Connection to M4 and Another M4EXT Two RS485
Operating Temperature 20°F to 130°F
Storage Temperature -4°F to 180°F
Operating Humidity 20% to 80%
Dimensions 11-3/8" wide x 9-1/4" high x 3-3/4" deep
Weight 2.5 pounds
Features
•
Easily connects to M4, another
M4EXT and XSIG with RS485
cables
•
Can be used with 0-5V, 1-5V,
0-10V, 2-10V and 4-20mA boil-
ers, in any combination
•
 A-Bswitchforidenticationwhen
two M4EXT units are used.
• UL Listed, tested per standard 916
Litho in U.S.A. © Bradford White 1402 Document 7018A-BW
Extension
Module for
M4 Control
CA004400
Submittal Data
www.BradfordWhite.com