Black Box Extra-Loud Phone Ringer
SFr. 26.46
Product Details
- Use this extra-loud supplemental phone ringer in noisy areas where you can't hear the phone ring, such as on shop floors or garages.
- Plugs into an ordinary RJ-11 jack.
- Features an on/off switch and simple mechanical bell construction.
- Pulls enough power from the phone line to provide a 65-75 dB ring.