Free
2 domains, 200 URLs, daily minimum cadence, and email alerts.
Sentinel tiers
Choose the operating shape, not a mystery box.
Every tier includes email alerts. The difference is how much you monitor, how often the appliance may run checks, and whether agency and automation controls are unlocked.
LIVE CHECK BOARD01 / 06
Free / 2 domainsWATCHING
Plus / 5 domainsWATCHING
Pro / 60 secondsWATCHING
Email includedWATCHING
Physical capacityWATCHING
operator controlledhistory / incidents / alerts
The signal behind the check
Sentinel is self-hosted. Your install key carries the selected tier, expiry, and product identity; the appliance verifies it offline and falls back safely when a key is missing, expired, cancelled, or unknown.
Built to be specific
A clear path from first signal to agency scale.
Plus
5 domains, 1,000 URLs, hourly minimum cadence, and email alerts.
Pro
No vendor-enforced licence cap, 60-second floor, client access, webhooks, white-label controls, custom checks, and optional JS.
Issuer-configured plans
The tier follows the operation.
Prices and checkout state come from the Sentinel plan rows.
01
Free
Free
A small install for first signals and essential email alerts.
- 2 domains
- 200 monitored URLs
- Daily checks
- Email alerts
02Recommended
Plus
£50/ year
More coverage and hourly checks for a growing operation.
- 5 domains
- 1,000 monitored URLs
- Hourly checks
- Email alerts
- Signed Sentinel install key
03
Pro
£100/ year
Agency depth: uncapped vendor limits, automation, and client controls.
- No vendor-enforced domain or URL cap
- 60-second checks
- Email + webhooks
- Client logins
- Custom checks + JavaScript
- White-label controls
- Signed Sentinel install key
Displayed amounts, billing interval, and paid checkout state are read from the dedicated Sentinel plan rows. Tax, currency, renewal, cancellation, refund, trial, support, and machine-binding terms must be confirmed by the operator before launch; checkout stays unavailable until the correct Stripe price is wired.
Runtime comparison
What each install key unlocks.
The issuer copy follows GgMonitoring_ApplianceTier.
CapabilityFree / Plus / Pro
Domains2 / 5 / No vendor cap
Monitored URLs200 / 1000 / No vendor cap
Minimum check cadenceDaily / Hourly / Every 60 seconds
Email alertsIncluded / Included / Included
Client loginsNo / No / Yes
Outbound webhooksNo / No / Yes
Custom checksNo / No / Yes
JavaScript renderingNo / No / Yes
White-label controlsNo / No / Yes
Install licensing
One key. One product. One honest downgrade path.
Paid checkout provisions a signed Sentinel install key with the exact tier claim. Cancellation or expiry suspends the install and the appliance degrades safely to Free; Free-scoped monitoring remains available while paid controls stop applying. A key for another product, an unknown tier, or an invalid signature never unlocks Sentinel Pro. Physical hardware capacity remains your responsibility.