General Information
Block Diagrams
Figure 2 shows a block diagram of the base unit interfaces and functions. The EA800 provides eight relays for indicating when a programmed alarm limit has been exceeded or a warning condition exists. An additional AUX (Auxiliary) Output relay provides an output signal to an optional audible alarm or strobe that is activated whenever an alarm condition exists.
Sensor 1
Sensor 2
Sensor 3
Sensor 4
Sensor 5 
Sensor 6 
Sensor 7 
Sensor 8 
Wireless Sensors
EA800 Base Unit
Relay 1 coil control logic
Relay 2 coil control logic
Relay 3 coil control logic 
Relay 4 coil control logic
Relay assignment and coil control logic
System Control
RF Receiver
Relay 1 
Output 1
Relay 2 
Output 2
Relay 3 
Output 3
Relay 4 
Output 4
Relay 5 
Output 5
Relay 6 
Output 6
Relay 7 
Output 7
Relay 8 
Output 8
Relay 9 
Aux Output
Figure 2 EA800 Environmental Alarm System Block Diagram
The EA800 can be made part of a larger security system as shown in Figure 3. In a security system there may be more than one EA800 installed along with other components such as the Winland EA200 or EA400
Sensor 1
Sensor 2
Sensor 3
Sensor 4
Sensor 5 
Sensor 6 
Sensor 7 
Sensor 8 
Wireless Sensors
Sensor 1
Sensor 2
Sensor 3
Sensor 4
Sensor 5 
Sensor 6 
Sensor 7 
Sensor 8 
Wireless Sensors
EA800 Base Unit |
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Relay 1 coil control logic | Relay 1 | Output 1 |
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Relay 2 coil control logic | Relay 2 | Output 2 |
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Relay 3 coil control logic | Relay 3 | Output 3 |
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Relay 4 coil control logic | Relay 4 | Output 4 |
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| Relay 5 | Output 5 |
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Relay assignment | Relay 6 | Output 6 |
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and coil control logic | Relay 7 | Output 7 |
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| Relay 8 | Output 8 |
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System Control |
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RF Receiver | Relay 9 | Aux Output | Alarm Panel |
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| From other |
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| EA800, EA400, and EA200 |
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| Environmental Alarm Systems |
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EA800 Base Unit |
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Relay 1 coil control logic | Relay 1 | Output 1 |
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Relay 2 coil control logic | Relay 2 | Output 2 |
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Relay 3 coil control logic | Relay 3 | Output 3 |
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Relay 4 coil control logic | Relay 4 | Output 4 |
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| Relay 5 | Output 5 |
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Relay assignment | Relay 6 | Output 6 |
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and coil control logic | Relay 7 | Output 7 |
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| Relay 8 | Output 8 |
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System Control |
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RF Receiver | Relay 9 | Aux Output |
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Figure 3 Facility Security System Block Diagram - Example
3 |
