Enviro EA800 ユーザーズマニュアル

This section describes the operation of the base unit's relays. The relays must be programmed correctly so that 

their outputs provide the desired signaling to the alarm panel.

High Alarm 

Limit

• Blue, Red and White 

temperature sensors

• HA-III+

• 4-20mA sensor

• Wireless humidity 

sensor

• Wireless 

temperature sensor

The High Alarm Limit sets the value that trips the high alarm when 

exceeded.

Alarm Delay 

Time

All

This sets the time period that an alarm condition can exist before the 

alarm is triggered. This is useful for helping to prevent false alarms from 

occurring in situations where normal activities cause conditions to tem-

porarily exceed alarm thresholds. For example, the temperature in a 

freezer may temporarily rise above the High alarm limit while frozen food 

is being restocked and the freezer door is open, but the delay prevents 

the alarm from going off unless the temperature fails to cool below the 

alarm threshold within the alarm delay period.

No Alarm

Relay State: 

De-Energized (default)

No Alarm: Power is removed from the relay coil as shown below.

Alarm: Power is applied to the relay coil as shown below. 

No Alarm

Relay State: Energized

No Alarm: Power is applied to the relay coil as shown below.

Alarm: Power is removed from the relay coil as shown below. This provides for a 

default alarm if the EA800 loses power in addition to the sensors' alarms. 

Active Condition:

Alarm Only

Sets the alarm to be active when an alarm condition exists.

Active Condition:

Alarm or Warning (default)

Sets the alarm to be active when an alarm condition exists or a warning is active. 

NC

NO

To
alarm
panel

From

EA800

logic

Idc = 0

C

NC

NO

To
alarm
panel

From

EA800

logic

Idc

C

NC

NO

To
alarm
panel

From

EA800

logic

Idc

C

NC

NO

To
alarm
panel

From

EA800

logic

Idc = 0

C