Tracy Clifford
Analyst · Artko Capital
Thanks, Jan. Following that overview, I'll just add a bit more detail about the financials, which are also in our 10-Q filed this morning, and then we'll take questions from investors.
In Q1 '22, reported GAAP revenue rose approximately 3% to $1.75 million, reflecting a 9% increase in hardware revenue and a 2% decrease in monitoring revenue. The increase in hardware revenue was due to more monitoring units sold in Q1 '22 versus Q1 '21, including TrueGuard 2 and Hero 2 units. Partially offsetting the increase in units sold was approximately $112,000 in revenue that was recognized in Q1 '21 from the sale of custom TrueGuard PRO units that were custom designed for monitoring by the customer, and thus, the revenue was not deferred. Excluding the sale of those custom units, hardware revenue would have been $585,000 in Q1 '21. Therefore, the increase in hardware revenue, excluding those custom units, was approximately 30% period-over-period.
Jan mentioned in his opening remarks that the increase in units sold is largely due to replacement of sunsetting 3G technology units. As new units replace the older units, monitoring revenue does not decrease in line with unit sales because the new equipment assumes the prepaid monitoring plan of sunsetting units. Therefore, sunsetting benefits hardware sales, but does not have the same accretive impact on monitoring revenue. Also, some customers who choose not to upgrade to newer technology may drop their IT monitoring plan. These factors explain strong hardware revenue in Q1 and weaker monitoring revenue. We saw similar trends in 2021, particularly as the year progressed.
Our gross profit grew 4% to $1.3 million in Q1 '22, reflecting a gross profit margin of 72% versus 71% in Q1 '21. Again, gross margin improved slightly despite increases in production and manufacturing costs. As Jan noted, during 2021, we took some specific actions to maintain a strong gross margin, which included implementing the price increase of 15% to 20% last September, and we also negotiated a more favorable cellular data rate plan for our business effective in March 2021. The new rate structure resulted in an improvement in our gross margin on monitoring from 86% in Q1 '21 to 92% in Q1 '22.
Total operating expenses increased 17% to $1.4 million in Q1 '22 reflecting higher SG&A and R&D expenses versus Q1 '21. The increase in SG&A was principally due to increases in personnel expenses as well as for increased travel, trade show and corporate expenses. Corporate costs increased primarily due to higher audit and other public company corporate expenses. R&D increased due to salary increases for our engineering team which were effective last September as well as the expenses related to the development of next-generation products and potential new product lines.
Our consolidated Q1 '22 operating loss was $122,000 versus operating income of $26,000 in Q1 '21 with the difference due to higher operating costs. In Q1 '21, Acorn reported a net loss of $123,000 or $0.00 per share versus net income of $20,000 or $0.00 per share in Q1 '21. As mentioned, cash basis revenue grew 26% in Q1 '22 over Q1 '21 with continued positive momentum in our business. We believe that the quality of our products and services, our technological innovations and the strength of the OmniMetrix team will lead to continued growth and market share gains, particularly in the commercial and industrial markets for Power Generation as we continue to introduce new solutions, product improvements and new product lines.
Turning to the cash flow. Cash generated from operating activities improved to $221,000 in Q1 '22 compared with $68,000 in Q1 '21, primarily due to increased deferred revenue from sales in the current year period. The company invested $57,000 in inventory in Q1 '22 in addition to inventory investments of $381,000 in fiscal 2021 as part of the continued effort to mitigate procurement issues for key components and materials in the face of global supply chain disruption.
Inventory increased to $674,000 at March 31, 2022 from $243,000 at March 31, 2021. This investment in inventory is part of the strategy we've been discussing to minimize potential impact to our business from shortages or long lead times and delays in obtaining critical components and supplies for our business.
We have the capital and financial strength to reduce business risk through the management of our working capital and our proactive actions have thus far been successful in maintaining strong growth. As we did in the latter half of 2021, in Q1, we continued to invest in our technology and software with $157,000 invested into the development and design of a new Azure cloud hosting environment to help us achieve rapid deployment, scalability and continued innovation as we grow. The Azure environment project was completed and launched on May 2, 2022, and we are very excited about that achievement. It will also potentially avoid increasing costs as we grow connections by eliminating vendor hosting fixed cost contracts in exchange for flexibility in a pay-as-you-go arrangement.
Our other technological innovation is the design and development of a new user interface for customers to access their data provided by our monitoring service. The new interface is more user-friendly and in Phase 2 of the development will offer more functionality and value to our customers, such as self-service custom reporting capabilities. These investments in technology allow us to work more efficiently and cost-effectively internally while also offering our customers a higher level of service and continue to keep OmniMetrix on the cutting edge of technological innovations in the IoT space.
With respect to our liquidity, we had consolidated operating cash of approximately $1.8 million at quarter end versus $1.7 million at year-end. As of May 11, our operating cash balance was $1.3 million, which excludes $300,000 we have set aside in an escrow account pertaining to a potential acquisition that we are evaluating within our space. As our financials reflect, we've been able to maintain liquidity while also investing for future growth, and we believe we have the financial strength and cash flow to continue to execute this growth strategy successfully.
As we have stated in past calls, in February 2021, we paid off our AR credit line and thus far, we've elected not to renew it. Should we decide to obtain a new credit line at some point, we believe that we could do so at favorable terms. Again, we are very pleased with our performance in early 2022, and we're excited about the rest of the year and for the longer-term opportunities for our business.
With that, I'll turn the call back to the operator to open it up to Q&A. Thank you very much.