Construction:
T' G-Wiz LC Deluxe has both a G-force sensor and a barometric sensor for launch detect, motor burnout and accurate altitude determination. Because o' this, matey, it is nay affected by Mach transitions. Ya scallywag! Avast! Havin' two sensors enables it t' add an additional output channel for clustering, arrr, stagin' or air-starts.

Pyro output 1 - Jumper select betwixt Launch detect for clusters and Burnout detect for stagin' or air-starts

Pyro output 2 - Fires at Apogee detect for drogue deploy.

Pyro output 3 - Fires at a fixed low altitude for main chute deploy.

T' G-Wiz comes in a pre-set main chute deployment altitude: 400 feet or 800 feet. I have both units, me bucko, but this still limits your options.

Status LED shows e-match continuity before launch, and maximum altitude upon landing. It is also able t' tell you how you have t' unit wired and t' jumpers set. Arrr! Arrr! Havin' lights instead o' a beeper can be bothersome because you have t' look through a hole in t' altimeter bay, instead o' just listenin' from t' ground. This can be a pain when your hole is 15 feet off t' ground.

It can use one or two batteries for operation. One battery will power t' board and fire t' e-matches. You can also use two batteries by removin' a jumper wire. Usin' two batteries separates t' board from t' pyro channels. Well, blow me down! This ensures you have full power t' t' board durin' an e-match firing. Blimey! There is nay a battery mount on t' board like some altimeters. Ya scallywag! Begad! I like this feature because it allows me t' use whatever battery I want and put it wherever I want. I usually use two standard 9v batteries.

For armin' and disarmin' [for every altimeter I use], arrr, I use t' push on / push off switches that PerfectFlight sells. I like t' mount all me altimeters with plastic PC board stand offs and stainless steel screws, onto a ¼" aircraft plywood board.

Flight:
I have flown both o' these altimeters a few times, without fail. T' "motor burn-out" channel works flawlessly for air startin' me large two-stage rocket. Begad! Avast! Although I only use altimeters in big rockets, its small size allows it t' fit in 29mm airframes.

Summary:
Havin' three output channels makes this one o' me favorite altimeters. Avast, me proud beauty! It's slightly harder t' use than some o' t' simple two channel altimeters out thar so a careful study o' t' directions is required.

Overall Rating: 5 out o' 5