The 2N-9154005 Microphone and Speaker kit consists of 1 x Electret microphone and 1 x Loudspeaker.  Both with self-adhesive pad.

Microphone:-

• Sensitivity 42dB
• operating temperature 5-35°C.
• Adhesion surface 25x25 mm.
• Must be protected from water penetration. 

Speaker:-

• Speaker with self-adhesive layer
• External dimensions 60x60 mm
• actual speaker diameter 45 mm
• Must be protected from water penetration.