Client +3 Lamp Flash Telephone Signaler 852-TR50 $64.95 CAD In stock Quantity: 1 Add to Bag Product Details Brand: Sonic Alert The Sonic Ring, model TR50 is designed for one room signaling and is best used in rooms that will use a separate lamp for normal room lighting. The lamp plugged into the TR50 can only be used for signaling in one room because the TR50 does not work with our remote receivers. Save this product for later Favorite