Bosch D9127U POPIT module without tamper switch
The Bosch D9127U POPIT module is a compact device that expands the number of points in a Bosch control panel system. It provides point identification of initiating devices and supervises wiring to ensure circuit integrity. The D9127U has no tamper switch; the D9127T adds a magnetic tamper switch.
The module uses terminal connections for reliability and multiplex technology, which supports efficient system expansion while minimizing installation costs. Its compact size makes it easy to add to existing installations.
Features
- Provides point identification of initiating devices
- Supervises wiring to devices for circuit integrity
- Expands the number of points in the system
- Compact size and terminal connections for reliability
- Multiplex technology and low installation costs
- Points are assigned by setting DIP switches on the module
Specifications
| Model |
D9127U (without tamper switch) |
| Voltage |
12 VDC nominal |
| Current |
0.8 mA maximum |
| Dimensions |
3.2 in. x 1.5 in. x 0.9 in. (8.1 cm x 3.8 cm x 2.4 cm) |
| Wiring |
Twisted pair, six twists per foot; modules wire in parallel on the D8125 data loop |
| Supervision |
33 kΩ end-of-line resistor, included with each POPIT |
Compatibility
Per the Bosch data sheet, the D9127 Series works with the D8125 POPIT interface module and with all G Series control panels, plus the D9412, D7412, D7212, D9112 and D9124. The most POPITs per panel include 238 on the D9412G and D9112 series, 119 on the D9124, and 32 on the D7212G series.
Specifications taken from the Bosch data sheet "D9127 Series POPIT Modules." Manufacturer specifications are subject to change without notice.
Documents
FAQ
What is the difference between the D9127U and D9127T?
The D9127U has no tamper switch. The D9127T adds a magnetic reed tamper switch.
Does it need an enclosure?
Yes for UL and ULC applications. Bosch states the module must be installed in a metal enclosure for UL intrusion, NFPA (UL fire) and ULC installations.
How is the point number set?
With the DIP switch on the module, using the table in the installation manual for the B9512G, B8512G and D9412GV4/D7412GV4/D7212GV4 panels.
What end-of-line resistor does it use?
A 33 kΩ end-of-line resistor installed at the farthest point on the sensor loop.
