Check the listing for details. Alarm Panel Security System DSL Filter RJ31X RJ38X For GE Honeywell Ademco ADT. Condition: New. Listed at 7.89 USD. OUR STORE | FAQ | ASK US QUESTION | FEEDBACKS | SUBSCRIBE Alarm Panel Security System DSL Filter RJ31X RJ38X For GE Honeywell Ademco ADT Use this DSL filter from Gigaware to protect your alarm system telephone service. Since your DSL and alarm services share the same phone line, sometimes one will produce interference that affects the other. This can be potentially dangerous in the case of an emergency, because the alarm signal could be disrupted so it is unable to reach the company monitoring your home. This filter puts an end to this problem. It has an industry-standard RJ31X plug, so it will connect to virtually any alarm panel. Best of all, it won't compromise the "line-seizure" or any other alarm feature, so you can rest in peace. Product Features: BRAND NEW in Retail Box NEW Gigaware DSL Alarm Filter 279-002 Reliably Eliminates Interference between DSL and Alarm Easy plug-in installation for RJ31X jack RJ31X Plug means it connects to virtually any alarm panel Insertion loss (200Hz to 4kHz): < -3dB Impedance distortion: < -3dB (phone port), < -6dB (ADSL port) Inter-modulation distortion: > 60 dB Insertion envelope delay distortion: < 200us Stopband attenuation (200Hz to 4kHz): < 22dB Bridging loss (200Hz to 4kHz): < -3dB Package Contains: 1 (ONE) Gigaware DSL Alarm Filter 279-002 1 (ONE) Instruction Manual