LYVIA TELFLASH Telephone Ringer Amplifier Land Line Sound Strobe Light Flasher\n- That's an easy-to-use plug-in telephone bell ringer.- With a visible LED indicator.- Simple plug-in design Fits standard BT socket Small.- Compact Visible LED call indicator audible alert. - No wiring is required.\nThe LYVIA TELFLASH Telephone Ringer Amplifier Land Line Sound Strobe Light Flasher Simple plug-in design Fits standard BT socket Small. External Extra Bell Ring With Flashing Light and Simply Plugs Directly Into BT Telephone Line Socket Compact. No wiring is needed and can also be a ringer without a telephone. The in-line port located on the front is covered by the push-up door. Telephone bell ringer with integral molded telephone plug and small light indicator. The product makes a similar volume noise to a conventional telephone very useful for use with textphones that do not have a bell.\nFeatures:\n- This product has a REN value of 1.- No wiring is required.- Compact Visible LED call indicator audible alert.- Color: White.- Product Type: Signal Accessories.- Usage: Domestic.- Condition: New.- Brand: LYVIA.