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Prices and Buying Options for Watchman

Prices includes USPS First Class shipping (2-5 days). If you prefer faster shipping, we offer USPS Priority Mail (2-3 days) option at check out.

Quantity Discount: There is a 3% discount for every additional unit (of same type). Discount shows up as items are added to the cart.

Warranty: 30-days money-back including shipping. 90-days product warranty (customer to pay shipping for both-ways). The product warranty is extended to 1 year for subscribed units. The warranty period starts from the unit purchase date.

The default LCD option is the display with blue background light. However, if blue light is harmful for your use case (e.g. for agricultural farms, blue light can be harmful for plants), you may choose LCD with green background light (no price difference).

Service features: Unit's regular price includes email alerts to your login email (no subscription required). For additional features (such as SMS alerts, power loss detection etc), a subscription ($1.99/month or $17.99/year) is required that you may add after purchase. Alternatively, you may buy with BuyOut option that offers all features for life (no more monthly/yearly subscription). For more information on features, click here.


pp-Code WiFi Watchman, monitor from anywhere with email & SMS alerts Included Sensors More information

Standard Watchman with No Display


Temperature, Humidity Offers Temperature and Humidity logs and alerts. Low cost option, same features as Standard Watchman, without an on-unit display. Logs are accessible via App / portal

Standard Watchman



Temperature, Humidity

Offers Temperature and Humidity logs and alerts. For more details click here

Watchman with External Probe

One Probe



Two Probes



Three Probes



Probe buffered with Glycol (an Add-On)

Temperature Offers Temperature logs and alerts, suitable for freezers, pools etc. External probe is water proof, and offers a measurement range from -40F to 170F. Please ensure that base unit is at room temperature. For more details click here.
Please note that the External Probe version does not support humidity sensor.




Regrading Buffered Probe Add-On: Glycol provides a buffer and probe reads an accurate temperature of the contents (in cold storage). With out such buffer, probe shows a higher variation (than the actual) in temperature of the contents, as refrigerator / freezer cycles through the defrost. CDC recommends using buffered probes as temperature monitoring for medicine and vaccine storage. For more details click here.
If you are ordering multiple External Probe Watchman units and you only want subset of them to be buffered probes, please send a note to us along with your order. You will be able to specify the desired number of buffered probes on checkout (a discount of 10% automatically applies on additional buffered probes at checkout).

Watchman for pool/spa (10k Thermistor) NTC Temperature Probe



Temperature Offers Temperature logs and alerts. This Watchman type is programmed to work with 10k NTC Thermistor temperature probes commonly used for pools and spas. The resistance of the thermistor probe changes with temperature. The software on the Watchman measures the changes in the resistance (of thermistor probe) and calculates the temperature. The product is rated to function correctly between 50F to 120F. If exposed to temperatures outside the qualified range (i.e. 50F to 120F), the temperature readings may be off by +/-5F. For more details click here.
Please note that this unit does not support humidity sensor.

Watchman with K-Type Thermocouple Temperature Probe



Temperature Offers Temperature logs and alerts, suitable for freezers, BBQ, ovens etc. K-Thermocouple covers widest temperature range from -300F to 2300F. Please ensure that base is at room temperature. The unit comes with a 14in long K-Thermocouple cable that can easily be replaced per your specific needs. For more details click here.
Please note that this unit does not support humidity sensor.

Watchman with Noise Sensor



Temperature, Humidity, Noise This variation of Watchman product combines noise sensor along with temperature and humidity sensors. In addition to be alerted for changes in temperature and humidity, now you can also be alerted for fire or burglar alarm, loud music, large gatherings or any other noisy events. Noise is detected by value varying from 30-100. The noise sensor reports 30-50 for quiet conditions whereas it reads higher (80+) for noisy conditions. For more details click here.

Watchman with Gas monitoring


Temperature, Humidity, Gas level This variation of Watchman product combines gas sensor along with temperature and humidity sensors. In addition to be alerted for changes in temperature and humidity, now you can also be alerted for gas level rise. Select a sensor type per your needs (same price).
MQ2: suitable for combustible gas, natural gas, smoke, alcohol, propane detection
MQ9: suitable for carbon monoxide, coal gas and liquefied gas detection
Please note that it does not provide the exact gas concentration (provides relative values). The detection of certain components in the air usually requires a more precise and costly instrument, which cannot be done with a single gas sensor. For more details click here.

Watchman with Water sensor and buzzer



Temperature, Humidity, Water This variation of Watchman product combines water sensor along with temperature and humidity sensors. In addition to be alerted for changes in temperature and humidity, now you can also be alerted for water leaks, that is detected by value varying from 0-1024. The sensor will report 0-50 for dry conditions whereas it will read higher (usually 200+) the moment it detect any water or moisture droplets. Also triggers a buzzer sound for alerting. Cable length to water sensor is ~80-85cm. For more details click here.

Waterlite Watchman with No Display


Water If you are only looking for water leak detection, then this low cost option is a right fit.
Water leak is detected by value varying from 0-1024. The sensor will report 0-50 for dry conditions whereas it will read higher (usually 200+) the moment it detect any water or moisture droplets. Also triggers a buzzer sound for alerting. Cable length to water sensor is ~80-85cm. For more details click here.

Watchman with Indoor Positioning System (IPS)


IPS Watchman offers an accurate and low cost WiFi-based Indoor Positioning System (IPS) to track the movement of people and goods with in and across facilities. Movements are detected based on nearest WiFi (referred as "locator" WiFi) that it connects to. For more details click here.

(Optional) Watchman 4G-LTE-MODEM


N/A For places where there is no WiFi for Watchman to connect with. Requires a monthly data plan (starts at $6/month). You may connect multiple Watchman units per modem and purchase the date plan accordingly (click here for details). The data plan is purchased via the portal at the time of modem activation.
The 4G-LTE-MODEM comes with a T-Mobile SIM (please ensure that you have T-Mobile coverage in your area before making the purchase). The modem connects with 4G/LTE service for data connection. In addition, it broadcasts a WiFi/SSID that Watchman(s) are pre-programmed to auto-connect with and go online. If you plan to connect your other devices to the modem, send us an email asking for modem's WiFi password.
In order to offer better price to our customers, we procure used modems (hence may show scratches). Though used, we test and guarantee their functionality. It does not comes with USB charger cable. It uses standard commonly available micro-USB cable.

Watchman 4G-LTE-MODEM

(Optional) Watchman Gateway


N/A Recommended if your are looking for plug-and-play setup or you have dual-band WiFi. Please note the gateway does NOT offer or replace (your existing) Internet service.
Simply cable-connect the gateway to your existing router and Watchman units will auto-connect and come online. They are pre-programmed to connect with the gateway (no need to perform WiFi setup on Watchman). You only need 1 gateway for all your Watchman units at a given location.

Watchman Gateway
Watchman Gateway
Connecting Gateway to your router


For questions, please send us a message at: tech@pp-code.com