Grandstream
WP816Grandstream WP816 Cordless WiFi IP Phone
The Grandstream WP816 is the Wi-Fi 6 entry handset. It sits at the same price point and the same battery life as the older WP810, but with two additions that decide most purchases: a Wi-Fi 6 radio (802.11a/b/g/n/ac/ax) and Bluetooth for a wireless headset.
Wi-Fi 6 matters less for the speed than for the behaviour. On a floor with dozens of devices competing for airtime, a Wi-Fi 6 handset gets its turn more predictably, which is what keeps a call clean at four in the afternoon rather than only at eight in the morning.
Two SIP accounts carry a personal extension and a shared department number. The 1500mAh pack gives up to 6 hours of talking and 120 hours on standby, and it is the same pack the WP810, WP820 and the DECT DP730 use — one spare part number covers a mixed fleet.
Key features
- Dual-band Wi-Fi 6 — 802.11a/b/g/n/ac/ax with an antenna design tuned for roaming
- Integrated Bluetooth — pair a wireless headset for hands-free work
- 2 SIP accounts, 2 lines — personal extension and a shared number together
- 3-way conferencing — bring a third party in without returning to a desk
- HD audio with the Opus codec — holds up on a constrained connection
- 3.5mm headset jack — for sites that will not allow wireless headsets
- 6 hours talk, 120 hours standby — from a user-replaceable 1500mAh battery
- Shares its battery with the WP810, WP820 and DP730 — one spare line for a mixed fleet
- No base station required — it registers to your wireless network and your SIP platform
Works with
- Spare 1500mAh battery — the pack this handset uses
- Grandstream WP810 — the older 802.11ac handset, no Bluetooth
- Grandstream WP820 — larger screen and 7.5 hours from the same battery
- Grandstream WP836 — IP67 and 10 hours, for tough sites
- Grandstream GWN7670 — the coverage a Wi-Fi 6 handset deserves
- Grandstream UCM IP PBX range
Frequently asked questions
How is it different from the WP810?
Same battery, same 6 hours, same two SIP accounts. The WP816 adds Wi-Fi 6 and Bluetooth. If your access points are Wi-Fi 6 or the floor is busy, that difference is worth having; if the site is quiet and older, the WP810 does the same job for less.
Does Wi-Fi 6 make calls faster?
Not faster — steadier. Voice needs very little bandwidth but is unforgiving about delay. Wi-Fi 6 schedules airtime better, so on a crowded floor the handset waits less. That is what you hear.
Do I need a DECT base station?
No. It joins your existing wireless network and registers to your phone system. What it does need is proper access point coverage — send us a plan and we will check it.
Can I use a Bluetooth headset?
Yes, that is one of the reasons to choose this model over the WP810. There is also a 3.5mm jack for a wired headset where wireless is not permitted.
Is it suitable for outdoor or wash-down areas?
No — it has no ingress protection rating. For weather, wash-down or handsets that get dropped, specify the WP825 or the IP67-rated WP836.
Will one charge last a shift?
Six hours of talking and 120 hours on standby covers a normal working day comfortably. For long or double shifts, keep a spare pack — the same one fits several handsets in the range.
Sizing a cordless rollout? Call 0333 242 1314 or email sales@clisecure.com and we will check your access point coverage before you order.
Wireless
| Wi-Fi | Wi-Fi 6, 802.11 a/b/g/n/ac/ax, dual-band 2.4GHz and 5GHz |
|---|---|
| Roaming | Advanced antenna design with roaming support |
| Bluetooth | Integrated, for wireless headsets |
Telephony
| SIP accounts | 2 |
|---|---|
| Lines | 2 |
| Conferencing | 3-way voice conferencing |
| Audio | HD audio, Opus codec supported |
| Headset | Bluetooth, or 3.5mm jack |
Battery and power
| Battery | Rechargeable 1500mAh lithium-ion, user-replaceable |
|---|---|
| Talk time | Up to 6 hours |
| Standby time | Up to 120 hours |
| Shared battery | Same 1500mAh pack as WP810, WP820 and DP730 |
Product details
| Brand | Grandstream |
|---|---|
| Part number | WP816 |
| Ingress protection | None — see WP825 or WP836 for rated handsets |
Customer reviews
Built for B2B buying
From product selection to deployment, this is made for real projects.
Get the hardware, licences and supporting kit you need without chasing multiple suppliers. CLI Secure helps trade buyers confirm fit, stock, delivery and project pricing before checkout.
Why choose us
Procurement that feels fast, clear and trade-ready.
Every product page is designed to help you move from shortlist to checkout with fewer unknowns.
Common questions
Product and order FAQs
Can I request trade or bulk pricing?
Yes. For multi-unit, reseller or project orders, contact CLI Secure and our team can review the basket for trade pricing.
How quickly can this be delivered?
Available delivery options are shown at checkout. Many in-stock products support next-day or timed UK delivery.
Can you help confirm compatibility?
Yes. Share the existing setup, model numbers or project requirement and we can help confirm suitable hardware, licences or accessories.
Do you supply renewals and supporting accessories?
CLI Secure supplies hardware, renewals, licences and related accessories across networking, CCTV, VoIP and IT support categories.
