Securlec Battery Operated Wirefree Door Bell & 1 Chime - 100m

Battery: receiver...4.5Vdc (3*AA)
Battery: transmitter...12V (23A)
Frequency: 433.92MHz(±150kHz)
Range: 100m (Open air)
Tunes: 38 Melodies
Dimensions: receiver...118*85*38mm
Dimensions: receiver...88*20*36.5mm
Weight: receiver...89g
Weight: transmitter...25g