Features:

• Works with any Silent Call Receiver
• Uses one 3-volt Lithium battery (included)
• Provides 24-hour a day protection
• Transmits through doors and walls
• 3-year warranty

Editor Reviews:

Product Description:
Smoke Detector Transmitter is activated by smoke. Its internal transmitter sends the proper coded signal to the receiver. Battery operated 9v (included) and may be used with any Silent Call receiver. 5 yr. warranty on transmitter only.May be alone or used with silent call receivers