Sonnerie de téléphone extra-forte, stroboscope, amplificateur de son

Features:100% Brand New and High QualityHigh Low switches for ringer sound.To increase the volume of telephone ring in noisy places.To help the haring-impaired to recognize ring coming.The lamp flasher is offered to avoid the ring noise in a quite environment.Material: PlasticSize: 97mm*58cm*25mmColor: WhiteBack-side Hole Design for HangingInstallation:Please connect the C/O ring plug with ringers jack.The ringers plug connect with telephone.There are high, low off switches for your selections.Package Includes 1 x Telephone Ringer