These conditions (temperature 5°C ≙ 41°F ≙ 278K to 40°C ≙ 104°F ≙ 313K; humidity up to 80% at
31°C, falling in linear form to 50% at 40°C ≙ 104°F ≙ 313K) generally prevail in residential and office
environments. Contact Honeywell if you are in any doubt.
The instrumentation section contains sensitive parts which can easily be damaged by mechanical
or electrostatic effects. When working on the device, it must be protected by an ESD guard (for
example, one which complies with EN 61340-5-1). Proceed with the appropriate care.
To open the instrumentation section, screw in the locking screws (see figure). Then remove the hood
by turning it counterclockwise. You will now see the elements in the section in front of you. The SSW
is a physical connection (jumper) to the main circuit board (Q2BASE) next to the battery.
Figure 6.1: Overview of security switch (SSW) position
The following figures (seen from underneath) show the details more clearly.
The SSW is opened and closed by attaching or removing a jumper, see following figures. The SSW
connection pins can be found after opening the housing on the underside of the main circuit board
(Q2BASE) between the battery and the USB connection.
Figure 6.2: SSW open (no jumper) and closed (jumper connected)
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