Our REDWALL SIP sensors provide long range external detection, working in conjunction with CCTV systems. Amongst the SIP series, a number of models feature an independent sensor referred to as the ‘creep zone’ sensor which is very useful to detect anyone walking underneath the sensor.

SIP Models featuring the creep zone

Medium Range ModelsCoverage
REDWALL SIP-3020/5 & SIP-3020/5-IP-BOX30x20m
REDWALL SIP-4010/5 & SIP-4010/5-IP-BOX40x10m
REDWALL SIP-404/5 & SIP-404/5-IP-BOX40x4m
Long Range ModelsCoverage
REDWALL SIP-100 & SIP-100-IP-BOX100x3m
REDWALL SIP-5030 & SIP-5030-IP-BOX50x30m


What is the creep zone?

In addition to the near and far detection zones, these models incorporate an independent creep zone sensor located at the bottom of the main unit. This provides short range coverage underneath the sensor, up to a 5m range.

Creep zone detection pattern

The creep zone sensor has a detection pattern of 90 degrees, with user adjustable rotation of + / - 90 degrees. The direction of the creep zone sensor should be verified with the indicator pointer located on the round ring dome (see picture below, note 1). If necessary, rotate the dome in the direction of coverage.

Optex tech tip SIP annotation

Adjusting the creep zone sensor

During installation you may need to adjust the direction of the creep zone sensor to provide effective coverage. Using the position indicator (see picture above, note 2), confirm the sensor is pointing in the desired direction. Once the direction is set, you may also slightly adjust the 5m detection range by using the +/- 3 degree vertical tilt feature (see picture above, note 3).

Confirming the coverage area

To confirm the coverage area of the creep zone you need to perform a walk test using the Alignment Walk Tester, item number AWT-3.

AWT-3