Centurion Systems G-Speak Ultra 4G Control Module (Gate Station Sold Separately)
Centurion Systems G-Speak Ultra 4G GSM control module only, with SIM. Pair it with a plastic 2-button or metal 1, 2 or 4 button gate station, sold separately. 4 inputs or outputs, 1500 users, 11 to 24V DC, IP40 so it mounts inside.
- 4G2G only as a fallback
- 4 channelsEach an input or output
- 1500Users with access
- IP40Mount inside, keep dry
Pricing for registered gate motor installers, electricians, security installation companies and building contractors.
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Get a formal quoteThis is the Centurion Systems G-Speak Ultra 4G control module on its own: the GSM unit, mounted inside the gate motor housing or a dry enclosure, that rings your cellphone when a visitor calls from the gate. No gate station comes with it. Pair it with a Centurion Systems plastic 2-button gate station, as in our G-Speak Ultra 4G kit, or an aluminium metal gate station with 1, 2 or 4 buttons, such as our metal 4-button gate station. It comes with its SIM from Centurion Systems, uses 4G with 2G only as a fallback, and lets up to 1500 users open the gate from the MyCentsys Remote app.
What's in the box
- 1 x G-Speak Ultra 4G control module (main unit with fascia and mounting plate)
- 1 x SIM from Centurion Systems, for use in this unit only
No gate station, no screws or wall anchors and no cable are included.
Which gate station to use with the G-Speak Ultra 4G
The gate station wires to terminals P1 to P6 on the module, which carry its power, speaker and microphone. Centurion Systems offers a plastic gate station with 2 call buttons, rated IP52, and an aluminium metal gate station with 1, 2 or 4 buttons, rated IP54. Each button rings up to two numbers. For a house, the G-Speak Ultra 4G kit with the plastic station is the simple choice. For a duet, a small complex, or a house with a cottage and an office, use this module with the metal 4-button gate station, which takes its 7.4V DC from the module.
What the module does
When a visitor presses a call button, the module phones the numbers set for that button, a primary and a secondary, on a cellphone or a landline. You talk through the gate station and open the gate from the MyCentsys Remote app or with your phone keypad during the call. Its four channels are each set as an input or an output, so it can report gate status from a Centurion Systems motor (open, closed, standing open, mains failure, battery low) and switch lights, an alarm or a pump; some uses need extra relays. Memory holds 1500 phone numbers, 20 access profiles and 5000 event logs, with weekly and visitor time-barring, and each call button can be time-barred on its own.
Mounting, power and setup
The module is rated IP40, so mount it inside the gate motor housing or a dry enclosure, away from the DOSS sensor and the remote receiver, and never in the open. It runs on 11 to 24V DC from the 12V or 24V gate motor controller and draws up to 300mA at 12V. Fix the mounting plate with four screws and wall anchors, which are not included, or clip it onto a DIN rail with the optional kit. The antenna is internal, with an SMA connector for an external antenna on sites that need one. Setup is done on G-WEB by your installer; Alectra supplies the equipment only.
Key features
- Control module only. The GSM unit of the G-Speak Ultra system, with its SIM. The gate station is sold separately.
- Plastic or metal gate station. Works with the plastic 2-button gate station (IP52) or an aluminium metal gate station with 1, 2 or 4 buttons (IP54).
- 4G with 2G fallback. Centurion Systems' current Quick Guide says the unit uses 4G whenever possible and 2G only as a fallback.
- Answer on your cellphone. Each call button rings up to two numbers; open the gate from the MyCentsys Remote app or your phone keypad.
- Four inputs or outputs. Report gate status, an alarm or mains power, or switch devices; some uses need extra relays.
- 1500 users and time-barring. 20 access profiles, 100 visitor windows and 30 weekly windows control who gets in and when.
- Powers the gate station. The module feeds the gate station through terminals P1 to P6, so the station needs no supply of its own.
- LCD screen. Shows signal strength, supply voltage, airtime and gate status for quick fault-finding.
- 24 month warranty. Centurion Systems warrants the unit for 24 months from delivery, on a carry-in basis.
Specifications
| Model | Centurion Systems G-Speak Ultra 4G control module |
|---|---|
| Gate station | Not included; works with the plastic 2-button (IP52) or metal 1, 2 or 4 button (IP54) gate station |
| Gate station terminals | P1 to P6 (power, speaker and microphone) |
| Network | 4G LTE (FDD bands B1, B3, B5, B7, B8, B20, B28); 2G GSM/GPRS/EDGE 900/1800MHz as fallback only |
| SIM | Included from Centurion Systems (Nano SIM, or e-SIM in South Africa); for this unit only, remains Centurion Systems' property |
| Supply voltage | 11 to 24V DC, from the 12V or 24V gate motor controller |
| Maximum current draw | 300mA at 12V DC |
| Input/output channels | 4, each set as input or output (50mA open collector) |
| Input sense voltage | 0 to 24V DC (low 0 to 1.6V, high 5 to 24V) |
| Numbers per call button | Up to 2 (primary and secondary) |
| Memory | 1500 access numbers, 5000 event logs, 20 access profiles |
| Time control | 100 visitor time-barring windows, 30 weekly time-barring windows, 10 output schedules, 3 daylight saving periods |
| Antenna | Internal; SMA connector for an optional external antenna |
| Protection | IP40 (mount inside the gate motor housing or a dry enclosure) |
| Operating temperature | -40°C to +85°C |
| Size | 114.4 x 73.6 x 33mm |
| Mounting | Wall (screws and anchors not included) or DIN rail with the optional DIN-rail kit |
| Setup and apps | G-WEB website and app, MyCentsys Pro (installer); MyCentsys Remote (users); firmware updates over the air |
| Warranty | 24 months from delivery (Centurion Systems) |
| Sold as | Each (control module and SIM; gate station sold separately) |
Not in the box
- Gate station (plastic 2-button, or metal 1, 2 or 4 button)
- Mounting screws and wall anchors
- Cable to the gate station
- Power supply (the module runs off the gate motor's 12V or 24V DC supply)
- External GSM antenna (optional)
- DIN-rail mounting kit (optional)
Questions people ask
No. This is the G-Speak Ultra 4G control module and its SIM only. Use it with the plastic 2-button gate station, which comes in our G-Speak Ultra 4G kit, or with a metal gate station such as our 4-button one.
Yes. The kit is this control module plus the plastic 2-button gate station. Buy the module on its own when you want to pair it with a metal gate station.
4G. Centurion Systems' September 2026 Quick Guide says it uses 4G whenever possible and 2G only as a fallback.
No. It is rated IP40, so it must go inside the gate motor housing or a dry enclosure. Only the gate station is made to stand outside.
Yes. Centurion Systems supplies the SIM, which may only be used in this unit and stays Centurion Systems' property. Airtime is loaded through G-WEB.
11 to 24V DC, drawing up to 300mA at 12V. It is normally powered from the 12V or 24V gate motor controller, and it powers the gate station in turn.
Yes, through its four channels. Centurion Systems has wiring diagrams for a striker lock, an alarm panel and an electric fence. The outputs are 50mA open collector, so a load such as a lock needs a relay.
No. Alectra supplies the equipment only. Centurion Systems says installation, repair and service work must be done by a suitably qualified person, so your installer wires it in and sets it up on G-WEB.
Need it fitted? Alectra Solutions supplies product only. Find a certified Centurion Systems installer at myinstaller.co.za.