Sensaphone SAT4D User Manual

Page 15

Chapter 2: installation

ZONE INpUT WIRING
The SAT4D has 4 Zone Inputs that are compatible with dry contact

sensors/outputs configured as either Normally Open or Normally

Closed. A dry contact is any open or closed circuit that has no volt-

age applied (such as a relay or switch). The SAT4D will sense when

the circuit changes from closed to open or vice-versa and then act

accordingly.

WARNING: Do not connect sensors, switches, or relays that

supply voltage to the SAT4D Inputs. This can cause permanent

damage. Be aware of proximity to other electrical wires or

equipment when placing wires that lead from the sensors to the

Inputs. Avoid running the wires near electrical equipment that

use high voltage or current, such as motors, heavy machinery,

etc. This voltage may be inductively coupled into the sensor

wiring and could result in false alarms or damage to the SAT4D’s

circuitry. Try to place wires at least 6 inches from other electrical

wiring.

Select a Zone Input to connect your sensor and wire it up to the

corresponding numbered terminal and adjacent Common “C” ter-

minal. Note that multiple Normally Open sensors may be connect-

ed to the same zone input in parallel and multiple Normally Closed

sensors may be connected in series. See figures below:

Alert condition occurs

when a normaly open

switch closes

1 C

ZONES

2 C

3 C

4 C

Multiple Normally Open Sensors