Siemens | Dual-Action Addressable Manual Fire Alarm Button (Pull Station)
Basic Information
– Model: **MSI-20B
– P/N Order Number: **500-893081
– Type: Intelligent Addressable Dual-Action Manual Fire Alarm Station
– Housing: Red polycarbonate, matte finish with raised white markings
– Weight: Approx. 0.36 kg (0.8 lb)
Key Features
1. Dual-Action Trigger: Press in (PUSH HERE), then pull down (PULL DOWN) to reduce false alarms; after activation, the handle locks in place to maintain the alarm state.
2. Two-Wire SLC Communication: Two wires provide both power and bidirectional communication with electronic address encoding, enabling the control panel to precisely identify which manual fire alarm has been activated.
3. Reset Method**: Use an Allen key to open the housing, close it securely to complete reset—cannot simply push the handle back to reset.
4. Address Programming Tool**: DPU programmer / FPI-32 kit for setting device addresses and testing.
5. Installation**: Surface-mounted or semi-flush installation options available.
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