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System Sensor Europe, like the majority of manufacturers, is experiencing longer product lead times due to component shortages. As we actively work to improve this situation, your satisfaction remains our main priority. View our current estimated lead times.

Addressable Base
– B501AP

This System Sensor base is designed for use with all 500, 200, 200+ and 200 Advanced intelligent ranges of sensors and their variants. The standard B501AP is white, an IV suffix indicates the base is ivory in colour, a BK suffix for black.

The B501AP Base is designed to accept S200 detectors and has a tamper resistant feature which can be enabled by breaking off a plastic tab. When enabled the detector cannot be removed without a suitable tool. The base can be labelled with a break-off address tag. Available in white, ivory and black colours.


• Width: 102mm
• Weight: 39 g
• Height: 22.5 mm
• Mounting to mounting boxes with a hole spacing of 60mm. Screw size max diameter 4 mm (head diameter 8 mm).
• -30°C to +60°C operating temperature range
• 10% to 93% Relative Operating Humidity
• Compatible with all S200 addressable sensors