Frequently Asked Questions


1) How can I be sure its working?
→ When motion is sensed, the green LED on the sensor lights up initially for 1 second then is inhibited for 2-3 minutes

NOTE: If it is desired to test sensors before mounting the UANTS, placing the UANTS in a darker area will show the LED under the antenna head start blinking with each sensor activation. The green LED on the motion sensor will also blink for 1 second when activated then be inhibited for 3-5 minutes. This delayed action is needed to avoid redundant activations and wasted satellite time for continuously activated sensors.

If testing after mounting the UANTS, the satellite data will appear within minutes on the user’s web page. The user web page is accessed by going to and pressing the “user login” button on the initial page then on the page that appears entering the user’s account number and password provided from the factory. The user’s web page will show activation of each reporting sensor as a red dot where a green dot was shown previously. See user installation web page illustration on P2.

NOTE: After the motion sensor report is sent to the satellites there will be a 12-15 minute redundant activation time delay inserted before the next satellite report can take place. This is necessary to avoid continuing redundant satellite usage for continuing “occupied” motion sensor activations.

If there is an equipment problem or a low battery condition for either a sensor or the UANTS satellite device it will be reported on user’s web page. There is also an automatic self-test every 24 hours and battery or equipment failure will be reported in a text

2) How long will batteries last?
→ They may last up to 12 months if very little motion needs to be detected.

Web Boat Watch works without using boat power, telephone lines or WiFi service so only the various sensors and the UANTS are needed to provide system reliability.

The bilge and motion sensor batteries will last many months depending upon the number of activations during normal use. They may last up to 12 months, like smoke detectors, if there is very little sensor activity. Most sensor batteries will last many months even in normal boat use or partially flooded bilge conditions. However, batteries should be checked and changed if needed every 6 months. Sensors and the satellite UANTS device have a self-test feature to report battery failure on the users web page.

The UANTS self-test also tests the electronics and satellites during its operation every 24 hours. Normal UANTS battery life will be 6-12 months but will mostly depend on the environment temperature and reporting usage. Very cold conditions will shorten battery life.

3) Why is there no master On-Off switch?
→ System switches are not used or needed as Web Boat Watch has intelligent software to eliminate redundant satellite activations when “occupied” boat conditions are detected.

On-Off switches may be accidentally left Off by or switched Off by intruders. The hardware and software of Web Boat Watch is intelligent and eliminates redundant activations when conditions of “occupied” are detected. That condition will show on the web user page. Redundant detections for frequent motion sensing on board the boat are avoided by adding inserted detection delays. The web page also shows those inserted detection “delays” on the row above the sensor columns.

NOTE: Each motion sensor (PIR) also has an On-Off switch, up is Off, down is On. This allows the user to continue intrusion detection in special un-occupied or unused areas while having more active area sensors switched off. A switched “off” sensor will also send a text or email message and show a yellow dot on that sensor position on the user’s web page for 1 day after which it then goes to the “unused” gray dot condition.

4) Do I have to keep my cell phone or email on continuously to get real time alerts?
→ Yes, it is probably easiest to have your cell phone with you or get email alert messages via Internet service.

When a sensor alert is sent the sensor number is reported in the text message and will also show on the user’s web page. The user can then determine if it is or is not an immediate threat before calling the Dockmaster, police or doing nothing depending upon circumstances. See also Sensor Questions below, #5, for avoiding false alerts.

A) What happens when movement is detected?
→ The following actions occur upon detection:

1) Immediate* notice of the unit serial number with sensor number is sent to the user’s cell phone by text message
2) Immediate notice of unit serial number with sensor number is sent as a text or email to the user
3) Immediate logging of the event with the sensor number will appear on the user’s web page. (except for minimum user plan with no web page)

Electronically, the sensors send a one second ID signal to the UANTS device located outside then the UANTS sends a one second ID and data signal to one of the 53 satellites overhead in low earth orbit. The satellite then adds that ID and user data in its data stream going down to the earth station which puts the data on the Internet page. * Delays may be experienced in data handling through the satellites and Internet servers. Typical overall response times are 2-4 minutes but in extremely busy or slow internet/telephone company conditions delays may be 10 minutes or more.

B) How does the Bilge Sensor detect rising water?
→ The sensor detects the water level inside the upright sensor copper tube and reports it as a 1 to 5 water level condition on the sensor text message or email. For the web page, the number reported will show as well inside the sensor dot or above it on the display

C) If I turn off the sensor unit what does its sensor dot show on the user’s web page?
→ The dot turns to yellow on the web site and an alert is sent to the user.

The yellow alert lasts for approximately 1 day, it then turns to a gray (unused) condition. If any sensor is disabled in any way and does not report in on a normal test less then 24 hours of not reporting it also turns yellow and email and text is sent.

D) Why does the sensor stop activating for 3 minutes after it detects someone?
→ It goes into standby mode for 3 minutes to avoid redundant re-activations.

This function is to reduce satellite time reporting redundantly for the same intrusion event. See also: ARD (Automatic Reporting Delay) below.

E) Will I get “false detections” of people?
→ NO! but false detections may be experienced for other reasons, most of which are avoidable.

1) Detection beam will go through windows if closer than 12 feet (greater distance is needed for large windows or patio doors).
2) Small animals, dogs, cats, mice/rats if close enough and even insects (flying inches away) will detect.
3) Air outlets blowing within a few feet may cause detections.

NOTE: A single activation is rarely persons moving in the monitored area. However, it is suggested that users should always conclude intrusion is taking place when more than one sensor is activated within a few minutes time period.

When do I get the cell phone/email text message after a sensor has been activated?
→ The message will usually come in 1-4 minutes after sensor activation.

Heavy satellite usage or prior activation by user’s sensors (see ARD) will slow down the reporting time. When satellites are very busy and in large cities, it could be delayed up to 10 minutes or more.

It is very rare to have missed messages but Xpondr does not guarantee 100% reporting. It should also be noted that the cell telephone and internet company controls the timeliness of sent text and email messages. Experience is, however, more than 97% overall reporting in less than 5 minutes.

2) Why do I usually get the message repeated or a 2nd message 10-12 minutes later?
→ Mostly, it is repeated because the 3 minute sensor delay expired and it or another sensor was activated within 15 minutes.

There is a back-up message called a “verify” sent 12-15 minutes after the initial alert message. This feature is valuable as the telephone company or Internet company may have missed the 1st one due to digital routing errors. Initial digital routing timing may get slower when Internet or telephone companies are very busy and the sensor gets reactivated. In some cases of delay, the 2nd sensor activation may or may not be included in the 1st message being received. The user is encouraged to experiment with the particular geographical location for sensor report timing and delays.

→ What is Automatic Reporting Delay?

ARD is an electronic function in the satellite up-link device (UANTS) that prevents excessive satellite usage when monitored boat is “occupied” and sensors are left on.

The ARD intelligent delay function will only activate when the monitored boat is determined by the system to be “occupied”. It does this after experiencing multiple detections in a predetermined period of time. The ARD detection delay when activated is shown for each sensor just above its column on the user web page. The ARD delay is shown in hours or fractions of an hour. Detection is turned off for the delay period. It should be noted that continuing reactivation after a delay expires will restart the delay and may actually increase it again to the maximum of eight hours.

The ARD delay function is useful to allow some sensors to be left on where continuing detection in “occupied” areas is not desired. Examples would be boat monitoring where the main salon and berths are switched off but the bilge sensor is left on. ARD action will also allow infrequently activated sensors areas to be left on when it is desired to detect persons in usually restricted areas while frequently used areas are off.

There is also a special user activated reset function built into each sensor to avoid missed detections that may occur immediately after user had exited a high activity monitored with the sensor left on. Although this would be an infrequently encountered situation, the user has the ability to bypass the ARD delay for all zones when leaving the protected area by switching any active sensor OFF, then back ON again within 10 seconds.

NOTE: The switching action causes the UANTS device to clear the ARD value and ignore sensor activations with a 2 minute “walk out” delay.