In general, Edwards CRB4U-1 detector base with relay provides plug-in tamper-resistant mounting and includes screw terminals for connection of installation wires. Also, the Edwards CRB4U-1 will accept #18 AWG (0.75mm2), #16 (1.0mm2), #14 AWG (1.5mm2) and #12 AWG (2.5mm2) wire sizes.
Mounting Requirements
Standard base mounts to the following electrical boxes:
- North American 31⁄2 inch octagon boxes
- North American 4 inch octagon boxes
- European 1-gang boxes with 60.3 mm fixing centers
- North American 1-gang electrical boxes
- European BESA boxes
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