Bosch D293A smoke detector

Four‑wire Detector Bases - Variety of interchangeable smoke and heat detector heads
- Detector's head removes easily by twisting
- Two‑piece detector head and base design allows pre‑wiring the system
- Externally‑powered sounder (85 dB at 10 ft [3 m])
The D293 Series includes the D293A Four‑wire Detector Base with Auxiliary Form C Relay, the D293E Four‑wire Power Supervision Detector Base, and the D293S Four‑wire Detector Base with Sounder. Use these bases with smoke and heat detector heads to provide early fire warning for life safety and property protection systems. This base is compatible with a number of control panels and with the following Bosch

Security Systems, Inc.'s' detector heads:
- D285 Photoelectric Smoke Detector Head
- D285TH Photoelectric Smoke Detector with Heat
- Sensor Head
- D286 Ionization Smoke Detector Head
- D603 Fixed‑temperature (135°F [57°C]) and
- Rate‑of‑Rise Heat Detector
- D604 Fixed‑temperature (135°F [57°C]) Heat
- Detector
- D605 Fixed‑temperature (190°F [88°C]) Heat
- Detector