Introduction to the Optimus E1K 4G/LTE GSM Gate Intercom and its key features
The Optimus E1K 4G/LTE GSM Gate Intercom is a purpose-built surface-mount entry device designed for gates, automated doors and barriers. Combining cellular connectivity with robust mechanical design, it offers a simple single-call-button interface plus a backlit, vandal-resistant keypad for PIN/code entry. Suited to both domestic smart-home installations and commercial access control, the E1K balances ease of use, remote capability and durable construction.
Key features at a glance:
- 4G/LTE GSM connectivity for mobile-network-based calling and remote control.
- Single illuminated call button paired with a backlit vandal-resistant keypad supporting up to 100 PIN codes.
- Calls cascade to up to three telephone numbers; authorised callers can open via DTMF.
- Downloadable activity log storing the last 10,000 events and on-board time profiles for scheduled operation.
- Robust construction with a 316 marine-grade stainless steel faceplate and IP64 ingress protection.
- Three programmable relays, two auxiliary inputs, and multiple programming options (USB, app, SMS, GSM modem).
Detailed specifications and benefits
The Optimus E1K’s specification list is designed to meet practical site requirements while offering the flexibility installers and end users expect from a modern GSM intercom. Below are the most important technical and physical details and the benefits they deliver.
- 4G/LTE GSM connectivity:Reliable cellular calling without the need for on-site phone line infrastructure — ideal for remote locations or where trenching for cabling is impractical.
- Power:Supplied with a 12 V DC, 1 A power supply unit (3 A fuse). Low idle current (≈120 mA @ 12 V) helps minimise standby power draw.
- Backlit vandal-resistant keypad:Accepts up to 100 PIN codes, enabling controlled access for residents, staff, contractors and temporary visitors without the need for a phone call.
- Call cascade:The unit can call up to three telephone numbers in sequence, ensuring someone is reached even if the primary contact is unavailable.
- DTMF remote control:Authorised callers can activate relays via standard DTMF tones (for example, pressing # to release a gate), enabling secure remote operation.
- Activity log:Stores the last 10,000 events and is downloadable for auditing and troubleshooting — valuable for commercial sites or properties requiring traceability.
- Time clock and profiles:On-board time clock with multiple profiles allows automatic schedules (e.g., different access rules outside business hours).
- Relays and inputs:One 2 A relay and two 200 mA relays with programmable activation time (1–60 seconds) plus two auxiliary inputs for sensors or external triggers.
- Construction:316 marine-grade stainless steel front plate, 40 mm low-profile anthracite alloy back box, downward-facing microphone and stainless security screws provide durability and a premium finish.
- Ingress protection:IP64 rating ensures the unit is protected against dust ingress and splashing water, suitable for most external mounting locations.
- Programming:Local USB programming or remote setup via the Commtel Command One app, SMS or a GSM modem makes configuration flexible for installers and administrators.
- Warranty:Backed by a 2-year manufacturer warranty, offering peace of mind for buyers.
Use cases and scenarios where the Optimus E1K excels
The E1K is engineered to perform across a range of residential, commercial and light-industrial scenarios. Its blend of cell-based connectivity and physical durability makes it especially well suited to the following situations:
- Rural properties and estates:When a landline or wired network is unavailable or prohibitively expensive to install, the 4G connection allows secure, reliable access without trenching.
- Small businesses and workshops:Businesses that need simple visitor access and remote opening control benefit from the call cascade, keypad PINs and activity logging for accountability.
- Temporary or remote sites:Sites such as construction compounds, pop-up facilities or agricultural gates where temporary secure access is required can deploy the E1K quickly and rely on cellular service.
- Multi-occupant homes and apartment courtyards:The ability to store up to 100 PIN codes and three cascade numbers makes the E1K well suited to small communal areas where different users require distinct access methods.
- Trade access management:Programmable timed trade access via keypad codes and scheduled profiles enables contractors to enter during agreed windows without staff intervention.
Comparisons with similar products on the market
Choosing the right gate intercom depends on connectivity, durability, features and budget. Here’s how the Optimus E1K compares broadly with other common options:
- Compared with wired IP intercoms:IP intercoms can offer video and integration with networked building systems but require ethernet cabling, PoE or a local network. The E1K’s advantage is plug-and-play deployment via 4G — no network infrastructure required — making it ideal for retrofit or remote locations.
- Compared with basic GSM call-only units:Some GSM intercoms simply call a single number and lack PIN functionality, activity logs or multiple relays. The E1K adds keypad access, a sizeable event log, multiple relays and programmable schedules, delivering more flexible access control and auditing.
- Compared with 3G-era GSM units:With 3G networks being phased out in many regions, 4G/LTE is the more future-proof choice. The E1K’s 4G support avoids obsolescence risks associated with older 3G-only devices.
- Compared with premium integrated access systems:Higher-end systems with IP, video, and cloud management offer advanced features but at a significantly higher price and installation complexity. The E1K strikes a balance: strong core access features, robust build quality and simpler installation at a lower cost point.
Customer feedback and common user impressions
While individual experiences vary, common themes emerge from installers and end users who choose a 4G GSM intercom with the E1K’s feature set. Typical feedback includes:
- Installers appreciate the flexible programming options (USB, app, SMS) and the downloadable activity log, which simplifies commissioning and troubleshooting on-site.
- Homeowners and site managers value the keypad for trade access and the ability to call multiple contacts (cascade) so that someone is reached quickly when visitors arrive.
- End users note the robust stainless-steel construction and the IP64 rating as reassuring for outdoor placements, especially in exposed or marine environments.
- Some users highlight the importance of checking SIM and network compatibility before installation, especially in areas with marginal mobile coverage; this is a standard practical consideration for any cellular device.
If you require documented third-party reviews or case studies, consult supplier pages or installer forums for real-world installations and feedback specific to your region and mobile operator.
Installation, compliance and practical considerations
The Optimus E1K is suitable for experienced DIY installers comfortable with low-voltage access control or for professional contractors. Key practical points:
- Always check local regulations and comply with electrical and building codes. Disconnect power before wiring and use a qualified installer where required.
- Confirm SIM/network compatibility and mobile signal strength at the installation site. Consider external antennas or alternative mounting if coverage is weak.
- Use the activity log, time profiles and multi-user PIN management to create access policies tailored to your property — for example, scheduled contractor access, temporary codes for visitors, or limited-duration trade PINs.
Conclusion: why the Optimus E1K is a strong choice
The Optimus E1K 4G/LTE GSM Gate Intercom is a compelling choice when you need a durable, flexible and future-facing access control solution without the need for fixed-line infrastructure. It pairs the practical advantages of cellular connectivity with thoughtful access features — a backlit vandal-resistant keypad for up to 100 PINs, call cascading to multiple numbers, an extensive downloadable activity log and programmable relays. Its 316 stainless-steel faceplate and IP64 rating make it resilient outdoors, while multiple programming options and a two-year warranty add convenience and confidence.
Whether you are securing a rural driveway, managing trade access for a small business or retrofitting a remote site, the Optimus E1K delivers a balanced feature set at a competitive price point. By combining robust hardware, practical access control capabilities and flexible installation options, it represents a practical, future-proof solution for many gate and door entry needs.
