Home Products Q & A Contact Us CM Expander Unit Model CMX-300 User Guide (pdf) Product Brochure (pdf) Discontinued Expands the CM-30 in increments of 30 lines Each CMX-300 provides an additional 30 lines to the basic 30 lines provided by the CM-30. You may add up to two Model CMX-300s which will allow one Observer to monitor up to 90 lines. All the standard features of the CM-30 are maintained when using the CMX-300. Installation is easy (see User Guide). You can add the CMX-300 to an existing CM-30 installation without disrupting the existing service. The CMX-300 is controlled by the CM-30: simply connect the additional lines you want to monitor and you’re ready to start. No extra power supply unit is required. The CMX-300 gets its power from the CM-30. Application When your system needs to grow beyond the 30 line capacity of the CM-30, you can expand quickly and efficiently with the CMX-300. It will allow you to expand your system in increments of 30 lines per unit, up to a total of 90 lines. If the size of your organization already exceeds 30 lines, the combination of the CM-30 and CMX-300 is your solution. Benefits 30 line capacity Expands the CM-30 in increments of 30 lines per unit up to 90 lines Compatible with analog Centrex, PBX or Key System lines Connectorized interface Can be wall mounted [TOP] Ordering Information CMX-300 CM-30 Expansion – 30 lines Specifications Min Typ. Max Unit Breakdown Volts Observed lines to ground 1000 VDC Environmental Operating Temperature 32 122 °F 0 50 °C Humidity (non-condensing) 95 % RH Connections Two A25B (RJ21) or equivalent 25-pair cables with female connectors Mounting Apparatus cabinet, relay rack or backboard Dimensions (HxWxL) Unit: 9.25” x 5.40” x 1.58” (23.5 x 13.7 x 4 cm) Packaged: 10.75″ x 6.375″ x 3.375″ (27.3 x 16.2 x 8.6 cm) Shipping Weight 1.98 lbs (898 grams) Certification Approval Number DOC CS03 350 3518 A CSA C22-2 No. 225-M90 LR 91817 FCC Part 68 FCNCAN-61252-PX-N UL 1459-2 D0292442DBC Related Products CM-30 [Back to TOP] Distributors Please contact Sales@dees.com to request a quote on volume orders Contact Us Contact Form (403) 382-DEES (3337) © 2021 Dees Communications Powered by Orbit & WordPress.