Find the right battery pack for your ARRIS Touchstone TM4 telephony modem. First, locate the Product Information Label located on the back of the TM4 family of modems. The model number will be listed as "Model:" on the label. For example, Model: TM402G. Use the model number to review the battery options for your modem as listed on the grid located on this page. Selecting "More Info" will provide details and purchasing information for the battery pack.
ARRIS Touchstone TM4 Modem Summary:
- The TM402A has no integrated battery backup capability.
- The TM402G uses one 8 hour battery pack.
- The TM402P uses one or two 8 hour battery packs. A second battery pack expands battery backup time from 8 hours to 16 hours.
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