Installation Procedures; Site Preparation Prior To Installation; Installing Backup Battery - Unitech MR350 MKII Technical Reference Manual

INPUT
1.1mA < Ii < 10.5mA
(3.5V < Vi < 24V )
( Vi < 1.5V )
Figure 2-16 Photocoupler input characteristics
2.8.

Installation Procedures

This chapter contains the installation procedures for the MR350MKII. It includes:

Site preparation prior to installation.

Installing the backup battery.
Installing the optional features within the terminal.
Reassembling the terminal.
Installing the terminal.
2.8.1. Site Preparation Prior to Installation
The MR350MKII terminal may be mounted to any surface by use of its
available mounting kit. For user convenience, the MR350MKII terminal
backplate is designed as a standard wall mounting plate. Also a
desktop/work bench mounting kit is provided as an accessory.
If possible, decide upon, and prepare the mounting location prior to
installation. Refer to "Site Preparation" on page 8-75 to pre-drill any
required mounting holes. While planning, please be sure to leave enough
room around the terminal to allow easy operation for all functions and
devices.

2.8.2. Installing Backup Battery

The MR350MKII is shipped with a backup battery installed and ready for
use. Therefore, if you are installing a new MR350MKII, you should skip
this procedure.
? ?
CAUTION:DO NOT DISPOSE OF BATTERY IN FIRE.
Installation
(1) Turn the MR350MKII terminal over, so that the LCD faces down.
(2) Unlock the main body (the lock is located on the bottom side), and lift
the backplate off the front cover.
OUTPUT
Vo > 4.8V
Ii < 0.24mA Vo < 0.4V
Reverse Voltage V
2-22
LOGIC
HIGH
LOW
= 6V
R(max)