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SimpleSense Presence Sensor


80% Funded
80% Funded
17 Backers
50 Unit Target
Ended 9 Months Ago

+ shipping

40 reserved of 50 Minimum

Product Details

SimpleSense Presence Sensor
Product Description

A SimpleSense presence sensor is like a web page counter but for a physical location. The sensor, based around a standard PIR (Passive Infrared Sensor), counts people and how long they’re present. With a rugged indoor/outdoor enclosure, built-in Cat-M1 cellular, long-lasting battery and simple SMS setup, you will be collecting presence data within 20 seconds anywhere there’s compatible cell service.

Production note: Our presence sensor is currently in alpha testing with early customers. This GroupGets campaign is for our beta version, which will be the basis for our first production run. As it is a beta, the hardware specs and specific chipsets used are subject change, but will be either as specified below or better.

Hardware Specifications:

Conceptual Renderings
CAD drawing front
CAD drawing, exploded view

Software Specifications:

  • Custom RTOS implementation
  • Health checks and reporting
  • Over the air updates
  • SMS configuration and reporting

Data Output Formats:

  • Fields: session timestamp, session length, sensor ID
  • CSV file
  • REST API request

Cellular Service

  • 3 months included with purchase
  • Additional data available at a discount for GroupGets purchasers, retail pricing starts at $100/year

HC-SR501 PIR sensor
HC-SR501 PIR Motion Sensor Specs

  • Maximum 110° angle sensor
  • 7m maximum sensing distance
  • Delay time: 5-300s ( adjustable) Range (approximately 0.3s - 5 min)
  • Block time: 2.5s (default) Can be made a range (0.xx to tens of seconds)
  • Operation Temp: -15 to +70 degrees
  • Lens size sensor Diameter: 23mm

External Links

Update #1: Alpha

alpha prototype
We're now testing our alpha prototype, with early customers helping us validate the tech stack (sensor + battery + cellular) and design choices work in the real world. This bad boy is IP67 rated and has been tested outdoors for the last 8 months (that dirt on the outside is actually a waterproof coating). Obviously, it's much bigger than our beta and Gen1 will be.

Update #2: Meet Chip

chip's sensor

Chip McClelland founded See Insights with his wife, combining their passions for the outdoors and technology. We found Chip through his open source project where he's measuring usage of parks and bike trails with cell-connected PIR sensors. Chip's building our alpha devices.

Follow Chip on Twitter and [Github]((

Why did you start See Insights?

Simply put, my wife and I love the outdoors. We saw an underserved market and a chance to provide data to both support and defend the value of parks and to provide those who run them actionable data to improve operations.

What problem are you trying to solve with cellular PIR?

We are focused on helping parks and recreation facilities better manage their operations by providing accurate, timely and relevant data. We use technologies that are conducive to outdoor and often remote environments such as cellular communications, solar power and discrete anonymous sensing devices such as Passive Infrared (PIR).

What has your presence data accomplished for your clients?

At the 550 acre Umstead State Park in Raleigh, these sensors provide near real time utilization data. This data is not only more comprehensive and accurate than before, it saves park rangers from having to drive 35 miles a day and spend countless hours collecting this data as they did in the past. There is another long-term project to document the impact of urban reforestation to reduce "hot zones" by continuously monitoring climatic conditions. These technologies are now inexpensive and simple enough that park staff can join the IoT revolution. We hope this will lead to more efficient, better run parks that serve and enjoy the support of their local communities.

Update #3: IP67

Part of our mission at SimpleSense is to make every sensor operable wherever you want to put it, without having to think about temperature, dust or moisture issues. Just mechanically afix it and forget it.


Enter IP67, a rating for enclosures and the standard we hold all of our future sensors to.

IP – This stands for the International Protection marking, a standard drawn up by the International Electrotechnical Commission (IEC).

6 – The first digit stands for its resistance to dust, but also general dirt and sand
7 – The second digit provides certification for water resistance

A 7 rating ensures "ingress of water in harmful quantity shall not be possible when the enclosure is immersed in water under defined conditions of pressure and time (up to 1m of submersion)" according to the IEC.

Why GroupGets?

Why GroupGet?

Our presence sensor is currently in alpha testing with early customers. This GroupGets campaign is for our beta version, which will be the basis for our first production run. As it is a beta, the hardware specs and specific chipsets used are subject change, but will be either as specified below or better. GroupGets helps us scale production faster.

Purchase Information

Unit Deliverable
1 presence sensor and 3 months cellular data service
Unit Price
Campaign Part #
Not available / campaign unsuccessful, end date: Sun, 18 Mar 2018 14:51:00 -0700
Factory Lead Time

12 Weeks

Shipping Details
GroupGets will handle the shipment of orders for this product.

Options and Add-Ons

Non-rechargeable lithium battery pack


Battery pack for SimpleSense

IP67-rated SimpleSense


Enclosure for SimpleSense

1 year of data


1 year of data, 80% off, GroupGets only price.

How it works

This is a group buy campaign that needs to acquire at least the stated minimum amount of pledges from backers like you before the Unit Deliverable and any Add-Ons ship. We do not charge anyone until the Progress above hits 100% or greater, otherwise there is no charge. All campaign products are vetted as existing and functional so your order will be fulfilled within the Factory Lead Time if the campaign succeeds. Please see our FAQ page for more details on our billing process.

  • Tzmobqcm normal

    I have just created the GroupGet for SimpleSense Presence Sensor!

    Post last edited: 11 months ago