Sensor keeps tripping every second?

I have a window sensor that won’t stop sending me notifications when it is open. When I look at my logs, I see this repeated over and over again every 3 seconds. Any ideas how I can fix this? Note the “Was: 1 Now: 1”. Nothing has changed, but it keeps tripping.

This is a window security sensor for a Honeywell Vista 20p with a AD2USB.

Device_Variable::m_szValue_set device: 161 service: urn:micasaverde-com:serviceId:SecuritySensor1 variable: Tripped [b]was: 1 now: 1[/b] #hooks: 1 upnp: 0 v:0x8b8050/NONE duplicate:0 <0x5c18>