- ABS housing
- DPDT Transfer Contacts for supervised Loop
- 2-Indivisual (N.C-N.O-Common) Circuits
- UL. Approved Micro Switch
- Push Orange Button or Pull Wire
- Reset: Push in 2mm dia. Key tool
- Color: Housing-Ivory, Gray / Button: Orange

- ABS housing
- Large round push button
- Status window alarm indicator red/blue
- Terminal strip for easy wiring
- Form C contact

- Dual-button activation to eliminate accidental triggering
- SPDT transfer contact for supervised loop
- Terminal strip with 3 wire terminals
- Tamper protected switch mechanism using UL listed micro switch
- Concealed mounting screw
- Status window indicator
- HUSD-15BL: latching button - tool reset (included)
- HUSD-15BM: momentary button – auto-reset
- Plastic case housing, color: white

- Form C contact
- Metal housing
- Key reset
- Silent operation
- Status window indicator (armed, alarmed)
- Mechanical operation
- Terminals for easy wiring