Check the listing for details. Honeywell Home FP280 Wireless External Flood Probe Sensor. Condition: New. Listed at 35.99 USD. Honeywell Home FP280 Wireless External Flood Probe Sensor Advanced Security LLC offers UL Alarm Monitoring Services starting at $15.00 per month or DIY Self-Monitoring Services starting at $10.00 per month, NO Contracts, NO Hidden Fees, & NO Activations Fees. Message or visit our website We are an Authorized Alarm DC, Honeywell Home, Resideo, AlarmNet, Ecolink, DSC, Telguard, SecureNet, Uplink, Alula & 2GIG Security Dealer. We only sell Genuine Products, from authorized distributors . Not closeouts or old stock. The Honeywell Home FP280 Wireless External Flood Probe Sensor intended for use with Honeywell 5821 and 470-12 wireless transmitter sensors. When the FP280 senses water it sends an alarm to the directly wired transmitter, which then sends the alarm initiating signal wirelessly to the Honeywell control panel. Features: Built-In Resistor 16.5 ft Wire Lead (No Polarity) Wall or Floor Mounted Self-Adhesive and/or Screw Mount Click here for more Resideo Honeywell Home Products 781410956322