Wired door chime transformerLock Nut TypeInput: 120VACOutput: 16VAC-10VA1 year warranty10-volt lock-nut-type transformerFor use with single-chime doorbell installationsInput 120-volt AC; output 16-volt AC, 10-volt ampere2.25 by 1.875 by 2.5 inches
SL-122 Doorbell Transformer. To control voltage to hardwired door chimes, look to the Heath Zenith Wired Door Chime Transformer. This lock-nut unit reduces voltage from 120 VAC to 10 - 16 VAC.
Brand: Heath/Zenith, Model: SL-122-02, Color: Steel