Description
🛡 3-YEAR AU WARRANTY
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🎧 AU TECH SUPPORT
Bosch CM704B — Solution 6000 8/16 Zone Expander Module
Adds eight conventional or sixteen split zones to a Solution 6000 or 144. It runs on 10–14 VDC from the LAN bus or a local supply, carries its own tamper input, and has status and zone-power LEDs that make commissioning and fault-finding straightforward.
Key Details
- Eight or sixteen zones — Zone doubling turns eight physical pairs into sixteen detection points, which saves substantial cable on a retrofit.
- LAN or local power — Draw from the bus on a short run, or from a local supply where volt drop would otherwise be a problem.
- Separate tamper input — The expander's own enclosure is supervised independently of the zones it carries.
- Status and zone-power LEDs — Immediate visual diagnosis at the board instead of a trip back to the keypad.
- 0°C to 55°C — Suits an unconditioned riser cupboard or plant room.
Where It Fits
The standard way to grow a Solution 6000 past its onboard zones. Site expanders near the detectors they serve rather than all at the panel — that is the whole point of a bus system, and it saves a great deal of cable.
Technical Specifications
| Model / SKU | Bosch CM704B (BOSCM704B) |
| Type | Hardwired zone expander module |
| Zones | 8 conventional / 16 split |
| Compatibility | Solution 6000 / 144 |
| Colour | Blue PCB |
| Mounting | Enclosure mount |
| Power | 10–14 VDC (LAN or local) |
| Tamper | Separate tamper input |
| Indicators | Status & zone-power LEDs |
| Operating Temp | 0–55 °C |
| Humidity | 5–85% non-condensing |
| Weight | 236 g |
| Warranty | 3-Year Australian Warranty |
Assurance
- 3-Year Australian Warranty
- Genuine Bosch stock, supplied and supported locally
- Australian-based technical support before and after purchase




